This guide comprises a list of Australia-themed achievements which are available on Steam.

Achievements included are those which:

1) Mention Australia, Australians, or Australian productions.

2) Make a reference to Australia, Australians, or Australian productions.

3) Include Australian icons or imagery, such as Australian flags, Anzac symbols, Australian fauna (e.g. emus, koalas, kangaroos), or Australian flora (e.g. gum trees, wattle blossoms, or waratahs).

If you want to decorate your Steam profile page with some Australia-themed achievements, then this is the place to start. You can browse through the games, and see if there's any games you would like to add to your Steam collection - and then you can add the relevant achievements to your profile page in an achievements section.

A section is included (at the end of the guide) of games which are no longer available for purchase from the Steam store.

There are many more to be added. If you know of an Australian-themed Steam achievement that has not been included here, please give the details in the comments section.

This guide was created on Australia Day (26 January) 2025.

(If this guide is of interest to you, then please rate it upwards.)

'on ya mate
Fall off the world while in Australia
.

Note: The full title of this game is: 420BLAZEIT 2: GAME OF THE YEAR -=Dank Dreams and Goated Memes=- [#wow/11 Like and Subscribe] Poggerz Edition
https://steamhost.cn/steamcommunity_com/stats/2624280/achievements

Australia Expert
(no achievement description is given)
(includes an Australian flag)

Australia Explorer
(no achievement description is given)
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/334850/achievements

A Best and Fairest Player
Coach a player named best and fairest for the entire league.
(in Australian sport, the "Best and Fairest" award is a top-ranked award)

An All-Australian Player
Have a player named to the team of the year.
.

https://steamhost.cn/steamcommunity_com/stats/578010/achievements

A BANANA!
Unlock the Bananarang
.

BBQer Virtuoso
Score 50000 in Arcade Cooking Mode
(features a boomerang)

Direct Delivery
Get a drink directly from a kangaroo to a friend
.

Fastest boomerang in the forest
Beat level 1 minute before the time runs out
(features a boomerang)

Flip-Flopper
Unlock the Flip Flop boomerang
(features a thong; thongs are known overseas as "flip flops")

Group Photo!
Get 2 quokkas in one shot!
(features some quokkas)

Only need my fists
Complete a level without throwing any boomerangs
(features a boomerang)

Resilient BBQer
Score 10000 in the Arcade Cooking Mode
(features a boomerang)

Sting Like a Butterfly
Punch big kangaroos 50 times
.

The ultimate boomerang
Unlock the Frisbee disk
.

Traveling in a fried-out Kombi
(no achievement description is given)
(a reference to the song "Down Under", sung by "Song by Men at Work")

True Aussie
Eat the 30 [unbranded for legal reasons] brown sauce sandwiches
(features an unbranded jar of Vegemite)

You can hop but you can't hide
Hit 200 tinyroos
(features a kangaroo)

You do always come back!
Catch a Boomerangs coming back 1000 times
(features a boomerang)

https://steamhost.cn/steamcommunity_com/stats/1588610/achievements

4152
x
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/709840/achievements

Speed!
Speed run South Australia.
.

Tasmania.
Unlocked Tasmania.
(features an outline of Tasmania)

Note: In Australia, a "bog roll" is a toilet roll (i.e. a roll of toilet paper).
https://steamhost.cn/steamcommunity_com/stats/2406060/achievements

"Eucalyp THIS!!"
Defeat the final boss.
(features a koala)

In what Australian state would you find this?
WHO IS HOBART
.

https://steamhost.cn/steamcommunity_com/stats/2118110/achievements

Destroy Australian
Destroy Randy Wreck to earn this achievement.
.

https://steamhost.cn/steamcommunity_com/stats/DeathRally/achievements

G'day Mate
Kill 250 Australian enemies
(features a kangaroo)

https://steamhost.cn/steamcommunity_com/stats/527320/achievements

Australia-Hungary
Starting as an Australian tribe unite Australia and subjugate Hungary.
(features a kangaroo)

Down Under
Have a colony in Australia.
(features a kangaroo)

https://steamhost.cn/steamcommunity_com/stats/236850/achievements

Australia
(no achievement description is given)
(features an Australian flag)

Note: This is a free game.
https://steamhost.cn/steamcommunity_com/stats/2996990/achievements

Australia
Australia
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/1384890/achievements

Land Down Under
Conquer Australia and New Zealand
(features an outline of Australia)

Note: This is a free game.
https://steamhost.cn/steamcommunity_com/stats/1087810/achievements

All of the achievements in this game have the same achievement picture, being a stylised image of an emu's face.

Air Support
Kill at least 10 Emus with one Air Strike
(features a stylised image of an emu's face)

Flock Leader
Get a flock of at least 10 Emus
(features a stylised image of an emu's face)

Fire in the Hole
Kill at least 10 Emus with a Land Mine
(features a stylised image of an emu's face)

Flock Master
Get a flock of at least 20 Emus
(features a stylised image of an emu's face)

https://steamhost.cn/steamcommunity_com/stats/976980/achievements

Aussie Rules
You beat a lap time of 01:39:00 at Bathurst. (Excludes drift events)
(features an Australian flag)

Bush-bash
You completed a Time Attack event at Bathurst.
(features an Australian flag)

Outback and Gone
You reached a speed of over 220mph (354.056km/h) at Bathurst.
(features an Australian flag)

Time Extended
You've won an online Checkpoint event at Bathurst.
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/GRID2/achievements

An Aussie Camper
Reach a tier 20 campsite in the camping minigame
.

True Aussie
(no achievement description is given)
(includes an Australian flag)

Note: This is a free game.
https://steamhost.cn/steamcommunity_com/stats/2631240/achievements

Australia-Hungary
As Australia, own all core territory of Hungary.
(includes an Australian flag)

Once More Mate
Occupy Gallipoli as Australia.
(features a kangaroo)

The weapons of the Third Emu War
As Australia, use a nuclear bomb on core Australian territory.
(features an emu)

https://steamhost.cn/steamcommunity_com/stats/394360/achievements

Firefly Dancer
Make it to level 7 without dying.
(features a koala)

Jester Koala
Reach level 9.
(features a koala)

Knight Koala
Reach level 10.
(features a koala)

Koala Master
Reach level 8.
(features a koala)

Koala on the Barbie
Die 100 times.
(a "barbie" is Australian slang for "barbeque"; features a koala)

Koala Trainer
Die 10 times.
(features a koala)

Outback Legend
Die 5000 times.
(features a koala)

Sneaky Bear
Make it to level 5 without dying.
(features a koala)

Note: This is a free game.
https://steamhost.cn/steamcommunity_com/stats/966450/achievements

Kangaroo rules!
Dont challenge them
(features a kangaroo)

Welcome to Moewbourne
Use up stamina 1 time
("Moewbourne" is a deliberate misspelling of "Melbourne")

Note: This is a Chinese game with an Australian theme.
https://steamhost.cn/steamcommunity_com/stats/996550/achievements

...And lived happily ever after
Finish the game
(features a kangaroo)

Flawless Victory
Defeat one of the Bosses without receiving any damage
(features a kangaroo)

Health Insurance
Have 20 lives in total
(features a kangaroo)

Mystery of the Volcano
Wear an outfit from Kao 3
(features an Akubra hat)

Warm up
Complete a tutorial with Walt
(features a koala)

https://steamhost.cn/steamcommunity_com/stats/1370140/achievements

Complete The Game 100%
Complete the game in single player, unlocking everything.
(features a koala)

Completed The Game 100% In Coop!
Complete the game in coop, unlocking everything.
(features some koalas)

Completed The Game In Coop!
Complete the game in coop. Not Necessary to unlock every item.
(features some koalas)

Does This Koalafy As Music?
Unlock all band members.
(features some koalas)

Eeww I Feel Something Crawling On Me! T_T
Hide in a bush.
(includes a koala)

Good Work Slaves... Eh Um.. I Mean Koala Friends!
Finish building the house.
(features some koalas)

Koalaty Time!
Play game for 10 min in one session.
(includes some koalas)

Master Has Given Koko A Hat!
Get the first hat.
(features a koala)

Note: It could be argued that all of the achievements for Koala Kids are in the style of Aboriginal art. It's up to you how you view them. I have chosen the achievements which I believe are readily identifiable as Australian in content or style.
https://steamhost.cn/steamcommunity_com/stats/381870/achievements

A Fine Addition To My Collection
Receive 100 Customizables
(features a koala)

A Koala's Best Friend
Collect 50 Diamonds
(features a koala)

Cool Guy
Get Frozen 3 times in 1 Turn
(features a koala)

Fairway To Heaven
Be Airborne a total of 100 Minutes (6000 Seconds)
(features a koala)

Green Card
Get Gold Star in Tutorial Challenge
(features a koala)

Hoarder
Shower in 30+ Gems during the Results
(features a koala)

Juggernaut
Reach a Score of 9000+
(includes a koala)

My Precious!
Pick up the Diamond, then Lose It
(features a koala)

National Treasure
Collect 5000 Gems
(features a koala)

Never Enough!
Collect 500 Gems
(features a koala)

No Time Like The Present
Open 50 Presents
(features a koala)

Seeing Stars x10
Get 10 Stars in Challenges
(features a koala)

Seeing Stars x25
Get 25 Stars in Challenges
(features a koala)

Seeing Stars x50
Get 50 Stars in Challenges
(features a koala)

Seeing Stars x75
Get 75 Stars in Challenges
(features a koala)

Stay Putt
End your Turn right back where you Started after a 5+ Combo
(features a koala)

The Magic Of Mushrooms
Use 500 Mushrooms
(includes a koala)

Time To Craft That Diamond Armor Set!
Collect 24 Diamonds
(features a koala)

Where's Koalaty Assurance? I Found Some Bugs!
Get Gold Star in Oh No Bugs Challenge
(features a koala)

https://steamhost.cn/steamcommunity_com/stats/1803220/achievements

LOGistICAL includes achievements regarding the states and major territories of Australia:

Complete New South Wales
Complete all towns, fix all roads and fully upgrade all the original industries in New South Wales
(includes an outline of the state of New South Wales)

Complete Queensland
Complete all towns, fix all roads and fully upgrade all the original industries in Queensland
(includes an outline of the state of Queensland)

Complete South Australia
Complete all towns, fix all roads and fully upgrade all the original industries in South Australia
(includes an outline of the state of South Australia)

Complete Tasmania
Complete all towns, fix all roads and fully upgrade all the original industries in Tasmania
(includes an outline of the state of Tasmania)

Complete the Australian Capital Territory
Complete all towns, fix all roads and fully upgrade all the original industries in the Australian Capital Territory
(includes an outline of the Australian Capital Territory)

Complete Victoria
Complete all towns, fix all roads and fully upgrade all the original industries in Victoria
(includes an outline of the state of Victoria)

Complete Western Australia
Complete all towns, fix all roads and fully upgrade all the original industries in Western Australia
(includes an outline of the state of Western Australia)


LOGistICAL also includes heaps of achievements regarding minor locations in Australia. There are so many that I have not included them all in this list. For example:

Badger Corner, Tute
Complete Badger Corner, Tute
(Badger Corner is a beach located to the west of Lady Barron, on the southern end of Flinders Island, Tasmania)

Lady Barron, Tute
Complete Lady Barron, Tute
(Lady Barron is located on Flinders Island, off the north-east coast of Tasmania)

Pot Boil Rd, Tute
Complete Pot Boil Rd, Tute
(Pot Boil Road is a road that runs to to the east of Lady Barron, on Flinders Island)

https://steamhost.cn/steamcommunity_com/stats/573060/achievements

Victoria Cross
Win 10 matches as either British or Australian forces.
.

Waltzing Matilda
Destroy a Matilda Tank using the "Elefantino" 47/32 ATG.
("Waltzing Matilda" is one of Australia's most well-known folk songs)

Note: This is a free game (a Community-Made Mod); however, to play it you must own Red Orchestra: Ostfront 41-45.
https://steamhost.cn/steamcommunity_com/stats/MareNostrum/achievements

Land Down Under
Fully dominate Australia
Note: The achievements page for this game does not mention that the task for this achievement is to "Fully dominate Australia"; however, that is the description given on the Completionist.me website.

https://steamhost.cn/steamcommunity_com/stats/981500/achievements

Australia
Aquired licence for Australia
(features a kangaroo)

Note: "Aquired" should be spelt "Acquired" (the devs made the same mistake 15x with their achievements for this game).
https://steamhost.cn/steamcommunity_com/stats/353630/achievements

Kangaroo Tamer
Australia continent completed
(features a kangaroo)

https://steamhost.cn/steamcommunity_com/stats/896230/achievements

All Australia Puzzles Complete!
Complete Pack: Australia
(features an outline of Australia)

Australia Complete!
Complete Puzzle: Australia
.

Cave Painting Complete!
Complete Puzzle: Cave Painting
(features an Australian Aboriginal rock painting)

Cockatoos Complete!
Complete Puzzle: Cockatoos
(features two cockatoos)

Derelict Barn Complete!
Complete Puzzle: Derelict Barn
(features an old barn in a rural setting)

Kangaroo Complete!
Complete Puzzle: Kangaroo
(features a kangaroo)

Roos Next 2km Complete!
Complete Puzzle: Roos Next 2km
(features a road sign with a kangaroo)

Strangler Fig Complete!
Complete Puzzle: Strangler Fig
(features a Strangler Fig, or Ficus watkinsiana)

Sturts Desert Pea Complete!
Complete Puzzle: Sturts Desert Pea
(features a Sturts Desert Pea plant)

The Opera House Complete!
Complete Puzzle: The Opera House
(features the Sydney Opera House)

The Pinnacles Complete!
Complete Puzzle: The Pinnacles
(features the Pinnacles, from Nambung National Park, Western Australia)

Uluru Complete!
Complete Puzzle: Uluru
(features Ayers Rock / Uluru)

Wallabies Complete!
Complete Puzzle: Wallabies
(features two wallabies)

Wallaby Complete!
Complete Puzzle: Wallaby
(features a wallaby)
Note: This is the first achievement with the same name and description.

Wallaby Complete!
Complete Puzzle: Wallaby
(features a wallaby)
Note: This is the second achievement with the same name and description.

https://steamhost.cn/steamcommunity_com/stats/351030/achievements/

Flat Earth Disproven?
Fly between Australia and the Southern Cone.
.

Flat Earth Proven?
Fly from Australia to the Southern Cone via Canada.
.

Kangaroo
Have a route between Sydney and London that visits at least four unique airports.
(features a kangaroo)

Southern Cross
Fly from San Francisco to Brisbane via Honolulu and Nadi.
.

https://steamhost.cn/steamcommunity_com/stats/2897240/achievements

Indian Pacific
Build the trans-australian railway from Perth to Sydney
.

https://steamhost.cn/steamcommunity_com/stats/3210080/achievements

Flag of Australia
Australia is an island continent
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/745740/achievements

You Beauty!
(no achievement description is given)
("You Beauty!", or "You Bewdy!", is an iconic Australian expression)

https://steamhost.cn/steamcommunity_com/stats/1008860/achievements

Bluey
Complete a round as an Australian soldier with red hair.
(in Australian slang, "Bluey" is a nickname typically given to a redheaded male)

BOOMerang
Throw a grenade, get blown up by it. (As an Australian soldier)
(features a boomerang)

Captain Thunderbolt
Kill 50 enemy soldiers as the gunner of the Bushranger.
("Captain Thunderbolt" was the pseudonym of Frederick Ward (circa 1835-1870), a famous Australian bushranger)

Crikey!
(no achievement description is given)
("crikey" is an exclamatory term, commonly used in Britain and British-settled countries; the term was made world-famous by Steve Irwin (1962-2006), an Australian wildlife expert)

He Was Only Nineteen
Kill an Australian soldier.
("I Was Only 19" is a famous Australian song about the Vietnam War)

I Come From a Land Down Under
Finish a round on any map as the Australian forces.
("I Come From a Land Down Under" is a famous line from the Australian song "Down Under", sung by "Men At Work")

Master Blaster
Who runs Bartertown?! As an Australian soldier, kill an enemy with a stolen RPG.
.

Ned Kelly
Kill 100 enemy soldiers as the pilot of the Bushranger.
(Ned Kelly (1854-1880) was a famous Australian bushranger)

That's Not a Knife, That's a Spoon!
Kill a player who has a bayonet equipped, using melee WITHOUT a bayonet equipped, on an Australian forces map (as either team).
("That's not a knife" is a famous line used in the Australian movie "Crocodile Dundee")

Two Men Enter, One Man Leaves
Safely land and exit a bushranger with a dead pilot or co-pilot (as either pilot or copilot).
(the "bushranger" gunship was a unique version of the Bell Iroquois family of helicopters, developed by the Australian military, and used by the Royal Australian Air Force during the Vietnam War)

We're the Only Diggers Around Here!
As an Australian soldier, kill a North Vietnamese soldier who is in the process of digging a spawn tunnel.
(in Australian slang, "Diggers" is a term which refers to Australian soldiers)

XXXX
Spot 4 enemies in a single life as an Australian soldier.
("XXXX", known as "Four-Ex", is a brand of beer, made in Queensland)

Note: This game also has Australia-themed DLC:
Rising Storm 2: Vietnam - Man Down Under Cosmetic DLC
https://steamhost.cn/steamcommunity_com/stats/418460/achievements

Out in Space Australia
Get 16 stars total in Death Valley
.

Note: In Australia, "servo" is an abbreviation for a "service station", also called a "petrol station" (known in America as a "gas station").
https://steamhost.cn/steamcommunity_com/stats/2514400/achievements

This isn't Kansas
Find Australia in a South Pacific map game
(features an outline of Australia, with a kangaroo)

https://steamhost.cn/steamcommunity_com/stats/CivV/achievements

Attack of the Drop Bear
Lose a unit to the perils of Australia in the Outback Tycoon scenario
(Drop Bears are vicious animals of the Australian bushland)

Crow-eater Conquest
Win Outback Tycoon as South Australia
(in Australian slang, people from the state of South Australia are known as "Crow-eaters")

Gumsucker Punch
Win Outback Tycoon as Victoria
(in Australian slang, people from the state of Victoria are known as "Gumsuckers")

Meanwhile, in Australia
Win Outback Tycoon at Deity difficulty
(the phrase "Meanwhile in Australia" is commonly used for internet memes about life in Australia)

Midnight Oil
Build an Oil Well on the final turn of the Outback Tycoon scenario
("Midnight Oil" is a famous Australian rock band)

Quite a Crowded House
Complete an online multiplayer game of Outback Tycoon
("Crowded House" is a famous Australian/New Zealand rock band)

Revenge of the Banana Benders
Win Outback Tycoon as Queensland
(in Australian slang, people from the state of Queensland are known as "Banana Benders")

Sandgroper Sweep
Win Outback Tycoon as Western Australia
(in Australian slang, people from the state of Western Australia are known as "Sandgropers")

Wood for Sheep
Playing as Australia, build a Pasture over Sheep and steal an adjacent player's Lumbermill
(Australia is well-known for its raising of millions of sheep, especially Merinos)

https://steamhost.cn/steamcommunity_com/stats/289070/achievements

Australian Mist
The Australian Mist is known for its exceptional temperament, they are tolerant of handling and are not inclined to scratch

National Flag of Australia
Australia is the only continent covered by a single country
(features an Australian flag)

https://steamhost.cn/steamcommunity_com/stats/710780/achievements

The Don has risen!
Score 334 or more
("The Don" is a nickname for Don Bradman (1908-2001), a famous Australian sportsman and the greatest cricket player of all time)

https://steamhost.cn/steamcommunity_com/stats/582360/achievements

Thirsty Koala
Went back for another round
(features a koala)

Note: All of the 13 achievement pictures for this game feature a koala (they all use the same image).
https://steamhost.cn/steamcommunity_com/stats/907770/achievements

Knight's Cross with Golden Oak Leaves, Swords, and Diamonds
Complete all secondary objectives in «Invasion of Australia» (Japan)
.

https://steamhost.cn/steamcommunity_com/stats/991810/achievements

Come In Spinner
Play Two Up
(Two-Up is an iconic gambling game in Australia, especially being played on Anzac Day as an mark of respect to our World War One soldiers, who used to indulge in a bit of Two-Up gambling whilst on active service)

Thats A Knife
Kill 10 Bounty Critters Using The Knife
(a reference to the famous "That's not a knife" line used in the Australian movie "Crocodile Dundee")

https://steamhost.cn/steamcommunity_com/stats/1577470/achievements

Australian Rules
Dominate an enemy Sniper.
(features an outline of Australia; the sniper character in TF2 is an Australian)

Sackston Hale
Craft the Saxton Hale Mask.
(Saxton Hale is an Australian character in the TF2 universe)

Note 1: Here's a link to the Saxton Hale page on the TF2 Wiki:
https://wiki.teamfortress.com/wiki/Saxton_Hale

Note 2: There are some TF2 achievements dealing with "Australium", but none of them appear to be specifically Australian in nature.

https://steamhost.cn/steamcommunity_com/stats/TF2/achievements

Tourist (Australia)
Discover all of the landmarks of Australia live in 3D.
(features an outline of Australia)

https://steamhost.cn/steamcommunity_com/stats/289930/achievements

Bird Burn
Hit Lenny with the Flamerang 15 times
(features a lyrebird )

Blue Tongue Bash
You didn't miss with a single boulder!
(re a Blue Tongue Lizard)

Boomerang King
Get all the boomerangs
.

Boss Cass Smacked
(no achievement description is given)
(features a Tasmanian Tiger)

Brotherly Love
(no achievement description is given)
(features a boomerang)

Find all the Bilbies
You found all the Bilbies!
(features a bilby)

Find all the Picture Frames
You found all the Picture Frames!
(features Ty the Tasmanian Tiger)

Foil Fluffy
(no achievement description is given)
(features a sulphur-crested cockatoo)

Free Crikey!
(no achievement description is given)
("crikey" is an exclamatory term, commonly used in Britain and British-settled countries; the term was made world-famous by Steve Irwin (1962-2006), an Australian wildlife expert)

Hot Dingo
Hit Shazza with the Flamerang
.

Mega-rific!
You got the Megarang
("Megarang" is a word derived from "boomerang", created for this game)

Nice and Toasty
Defeat 100 enemies with the Flamerang
(features a boomerang)

See the Unseen!
You got the Infrarang
("Infrarang" is a word derived from "boomerang", created for this game)

Shake the Room!
You got the Kaboomerang
("Kaboomerang" is a word derived from "boomerang", created for this game)

The Ashes
Burn 50 Cricket Bats
(re "The Ashes" cricket matches, Australia vs. England)

Throw throw throw throw throw
You got the Multirang
(features three boomerangs)

Two Rangs Are Better Than One
You got your second rang!
(features two boomerangs)

Zoom Zoom
You got the Zoomerang
("Zoomerang" is a word derived from "boomerang", created for this game)

https://steamhost.cn/steamcommunity_com/stats/411960/achievements

A Hundred Percent True
(no achievement description is given)
(features a lyrebird)

All The Rangs!
Buy all the rangs from Sly's Shack.
(features a boomerang)

Burramudgee GraffiTY
Finish in first place in all races.
(appears to be a made-up Australian name, based upon 1) the town Burrangong, or Burrangong Creek, and 2) the town Mudgee, or the Mudgee River)

Bush Rescue Out Of Order
Complete all the missions.
(re the Australian bushland)

Bush Rescued
Complete the game
(re the Australian bushland; features a cassowary)

Bush Rescued (Hardcore)
Complete the game (Hardcore)
(re the Australian bushland)

Cryptocartographer
Buy all the maps from Madame Mopoke.
(a mopoke is an Australian owl)

Fully Koalafied
(no achievement description is given)
(re koalas)

I Need Rangs!
Buy all the rangs from the Rang Shop.
(features a boomerang)

Keymaster
Buy all the bunyip licenses.
(a bunyip is a mythologial Australian animal)

Photo Booth
Find all the picture frames.
(features Ty the Tasmanian Tiger)

You Have A Friend In Me
Find all the Bilbies.
(features a bilby)

https://steamhost.cn/steamcommunity_com/stats/411970/achievements

Beds are Burning
Take out enemies with fire.
("Beds Are Burning" is a well-known song, sung by the Australian rock band "Midnight Oil")

Bush Rescue Forever
Complete all the rescue missions.
(re the Australian bushland)

Chassis Chaser
Obtain all Rang Chassis.
(features a boomerang)

DoubleDigeridoo
Get a double digit rang combo.
(features a boomerang)

Family Re-uniTYed
Rescue all the Bilbies.
(features a bilby)

It’s a Long Way to the Top
100% Complete the game in Hardcore Mode.
("It's a Long Way to the Top (If You Wanna Rock 'n' Roll)" is a famous song, sung by the Australian rock band AC/DC)

Maxy Walker
Get the maximum rang combo.
(Max Walker was a famous Australian cricket player; features a boomerang)

https://steamhost.cn/steamcommunity_com/stats/411980/achievements

Danger Is My Middle Name
Completed all Danger Arenas
(features a goanna, drawn in an Aboriginal art style)

Elemental As Anything
Defeated an enemy with each of the elemental 'rangs
("Mental As Anything" is a famous Australian rock band; features a boomerang)

In The Nick Of TYme
Completed a Time Attack
(features a snake, drawn in an Aboriginal art style)

Rangtastic
Bought all six standard rangs from the Rang Store
(features four boomerangs)

You've Still Got It
Threw a 'rang
(features a boomerang)

https://steamhost.cn/steamcommunity_com/stats/287840/achievements

Advance Australia
Unlock all specializations for the ANZACs
(features an Anzac badge)

https://steamhost.cn/steamcommunity_com/stats/242860/achievements

Australian Ace
Destroy 100 player vehicles while using Australian vehicles
.

https://steamhost.cn/steamcommunity_com/stats/WarThunder/achievements

Kangaroo
Kangaroo 60 Complete
(features a kangaroo)

Kangaroo
Kangaroo 240 Complete
(features a kangaroo)

Kangaroo
Kangaroo 350 Complete
(features a kangaroo)

Koala
Koala 60 Complete
(features a koala)

Koala
Koala 240 Complete
(features a koala)

Koala
Koala 350 Complete
(features a koala)

https://steamhost.cn/steamcommunity_com/stats/545960/achievements

Big hit in Australia
Win the Coates hire Rally Australia. Offline rally with three day calendar
(Note: Some wombat on the dev team used the New Zealand flag, instead of the Australian flag, for this Australian achievement.)

The season draws to a close
Complete the Coates hire Rally Australia in the World Rally Championship in career mode
(features an outline of Australia)
(Note: Once again some wombat on the dev team used the New Zealand flag, instead of the Australian flag, for an Australian achievement. There is no federal star, and the Southern Cross only has 4 stars, instead of the 5 on the Australian flag.)

https://steamhost.cn/steamcommunity_com/stats/256330/achievements

Australia!
Win the Coates Hire Rally Australia in Career mode.
(features an outline of Australia)

https://steamhost.cn/steamcommunity_com/stats/354160/achievements

The following games are no longer available for purchase from the Steam store:
Basketball Pro Management 2015
Colin McRae Rally
F1 Race Stars
Galactic Bowling

Australian Championship 1
Win the Men's Australian First Division Title
.

Note: This game is no longer available for purchase from the Steam store.
https://steamhost.cn/steamcommunity_com/stats/310880/achievements

Globetrotter
Compete in at least 1 rally in Australia, Greece and Corsica
.

Win the Australia Rally Series
Complete the Australia Rally Series in 1st place
.

Note: This game is no longer available for purchase from the Steam store.
https://steamhost.cn/steamcommunity_com/stats/287340/achievements

Australia Expert
Win an Australia event at 3,000cc (no teams)
(features an Australian flag)

Note: This game is no longer available for purchase from the Steam store.
https://steamhost.cn/steamcommunity_com/stats/F1RaceStars/achievements

Shark Sandwich
Beat Max in Battle mode as the Shark in Australia
.

Note: This game is no longer available for purchase from the Steam store.
https://steamhost.cn/steamcommunity_com/stats/GalacticBowling/achievements

(as at 26 January 2025)

1001 Jigsaw. World Tour: Australian Puzzles
art of rally: australia (DLC for: art of rally)
Aussie Battler tanks
Aussie Clowns At War
Aussie Rules Coach
Aussie Sports VR 2016
Australian Football Coach 2023-24
Australian Road Trains
Australian trip
Club Koala
Copycat
Dinkum
Elmo's Kangaroo of the damned: PUNISHMENT EDITION
Emu
Emu War!
Kao the Kangaroo (2000 re-release)
Kao the Kangaroo: Mystery of the Volcano (2005 re-release)
Lenny Loosejocks Goes Walkabout
STOP! Don’t Die In Australia

Games not yet released:
Aussie Bogan Hero
Footy Showdown
Mr Football
Ned: Iron Outlaw

101 Cats Hidden in Australia
https://steamhost.cn/steamcommunity_com/stats/3242370/achievements

Hentai saves Australia
https://steamhost.cn/steamcommunity_com/stats/1063860/achievements

Kao the Kangaroo: Round 2
https://steamhost.cn/steamcommunity_com/stats/1048540/achievements

Mad Max
https://steamhost.cn/steamcommunity_com/stats/234140/achievements

Revhead
https://steamhost.cn/steamcommunity_com/stats/589760/achievements


Games with Australia-themed DLC, but no Australia-themed achievements:

art of rally
DLC: art of rally: australia
https://steamhost.cn/steamcommunity_com/stats/550320/achievements

Euro Truck Simulator 2
DLC: Euro Truck Simulator 2 - Australian Paint Jobs Pack
https://steamhost.cn/steamcommunity_com/stats/227300/achievements

Planet Zoo
DLC: Planet Zoo: Australia Pack
https://steamhost.cn/steamcommunity_com/stats/703080/achievements

theHunter: Call of the Wild™
DLC: theHunter: Call of the Wild™ - Emerald Coast Australia
https://steamhost.cn/steamcommunity_com/stats/518790/achievements

Wildlife Park 3
DLC: Wildlife Park 3 - Down Under
https://steamhost.cn/steamcommunity_com/stats/287200/achievements

A lot of these achievements were found thanks to the Completionist.me website (thanks to Hawk for the heads-up on that one).

This URL show the search results for the word "Australia".
https://completionist.me/steam/achievements?display=list&sort=created&order=desc&search=Australia