here are a few suggestions,i guess?

All Your Bases Belong To Me!:take control of every CIty State on a map.
The Empire:take control of every city on the map,excluding City State owned cities.
Planet Mine:Control every city on the map,City States included,you damnedest warmongoer.
Inside Joke:Research The Internet without researching Computers first.
Mobile Barbarian:Take over three cities before researching the Wheel.
Noble Barbarian:Take over three cities before completing a single policy tree.
A New Challenger Has Appeared!:become allies with a City State that controls atleast two other cities that were previously owned by another player.
Denmark is for the Danish!:As Rome,control three Danish cities for a minimum of thirty turns,only to have them recaptured by the Danish.
You Have Researched Breathing:Have a Great Work of Writing before you have discovered Writing.
Et Tu,Brute?:As either Rome or Byzantium,have all of your cities taken over by Byzantium or Rome,respectivly.
Finklefaulger,King of VVlitzenvaagen:Play a game with your civ being customized/renamed.
Venice Takes Over The World:win a Domination Victory as Venice.
"Unique Ability" Who?:Embargo City States and Embargo Venice in the same game.
Now If Only Our Cars Had Wheels...:research a Classical or Ancient Era tech in the Industrial or Modern Era.
I Worship Qwertywasd:create a custom name for your religion.
The Great City Of Cityville:give one of your cities a custom name.
The Maya Have Taken Over ScrewyouPacal!:rename a city you recently took over,then have it be recautured by the previous owners.
Well Planned:Have a City with every possible tile improvement.
are you glued to the chair?:play an entire game of Civilization in one sitting.
OH NO:be at war with Attila,Montezuma,Shaka,Alexander,and Khan all at once.
Paci-Fist:Win a game where you're always at war with sombody(time until you meet sombody is void/excluded).
I am surrounded by imbiciles...:Enter the Modern Era before another player enters the Rennaisiance.
Spamming The Medic Key:have five units in your army with the Medic II promotion.

Originally posted by Caligula:

here are a few suggestions,i guess?

All Your Bases Belong To Me!:take control of every CIty State on a map.
The Empire:take control of every city on the map,excluding City State owned cities.
Planet Mine:Control every city on the map,City States included,you damnedest warmongoer.
Inside Joke:Research The Internet without researching Computers first.
Mobile Barbarian:Take over three cities before researching the Wheel.
Noble Barbarian:Take over three cities before completing a single policy tree.
A New Challenger Has Appeared!:become allies with a City State that controls atleast two other cities that were previously owned by another player.
Denmark is for the Danish!:As Rome,control three Danish cities for a minimum of thirty turns,only to have them recaptured by the Danish.
You Have Researched Breathing:Have a Great Work of Writing before you have discovered Writing.
Et Tu,Brute?:As either Rome or Byzantium,have all of your cities taken over by Byzantium or Rome,respectivly.
Finklefaulger,King of VVlitzenvaagen:Play a game with your civ being customized/renamed.
Venice Takes Over The World:win a Domination Victory as Venice.
"Unique Ability" Who?:Embargo City States and Embargo Venice in the same game.
Now If Only Our Cars Had Wheels...:research a Classical or Ancient Era tech in the Industrial or Modern Era.
I Worship Qwertywasd:create a custom name for your religion.
The Great City Of Cityville:give one of your cities a custom name.
The Maya Have Taken Over ScrewyouPacal!:rename a city you recently took over,then have it be recautured by the previous owners.
Well Planned:Have a City with every possible tile improvement.
are you glued to the chair?:play an entire game of Civilization in one sitting.
OH NO:be at war with Attila,Montezuma,Shaka,Alexander,and Khan all at once.
Paci-Fist:Win a game where you're always at war with sombody(time until you meet sombody is void/excluded).
I am surrounded by imbiciles...:Enter the Modern Era before another player enters the Rennaisiance.
Spamming The Medic Key:have five units in your army with the Medic II promotion.

I like quite a few of those, you can expect some of them in the next version!
(Quite funny how some of your ideas match ideas that I came up a few days earlier too )

Here's a few suggestions I made:
Tips Civilization: Win a game without having a religion.
Kim Jong Sejong: As Korea, nuke a city and while having the order idelogy.
Saddam strikes back: As Babylon, pillage all oil wells of another civ.
Superpower by 2020: As India, win a science victory by 2020.
One small step for man: As America, win a science victory by 1969.
Enola Gay: As America, nuke 2 Japanese cities with atomic bombs.
Anime for America-kun: As Japan, have America influenced by your culture.
Quit your game now!: Have India nuke one of your cities.
Houston, we have a problem!: As America, lose from a space victory.
Pink Panther: Steal a tech from France.
Fuhrerous Capture!: As Germany, conquer Poland by 1939
When your culture influences the world just right!: As the Inca, win a culture victory
No burnt white house here: As America, Conquer Vancover by 1812

Originally posted by DohEnt:

Here's a few suggestions I made:
Tips Civilization: Win a game without having a relgion.
Kim Jong Sejong: As Korea, nuke a city and while having the order idelogy.
Saddam strikes back: As Babylon, pillage all oil wells of another civ.
Superpower by 2020: As India, win a science victory by 2020.
One small step for man: As America, win a science victory by 1969.
Enola Gay: As America, nuke 2 Japanese cities with atomic bombs.
Anime for America-kun: As Japan, have America influenced by your culture.
Quit your game now!: Have India nuke one of your cities.
Houston, we have a problem!: As America, lose from a space victory.
Pink Panther: Steal a tech from France.
Fuhrerous Capture!: As Germany, conquer Poland by 1939
When your culture influences the world just right!: As the Inca, win a culture victory
No burnt white house here: As America, Conquer Vancover by 1812

I never expected to get so many cool ideas in this thread! And again, funny how several people can have the same ideas!
You can expect some of them in the upcoming versions, but first there will be a relatively big Achievopedia Update!

Say hello to my little friend: have a military city-state ally take your enemy's city
hello hi welcome, we are here two destroy you!: in one turn use an excom squad to kill a giant death robot
use the force luke use the force: have a atomic bomber hit a city with a nuke in it
we the people of the united states: as england get atacked by the united states and france then make peace with both, or as ether the united states or france declare war on england with the other

Originally posted by Jerry:

Say hello to my little friend: have a military city-state ally take your enemy's city
hello hi welcome, we are here two destroy you!: in one turn use an excom squad to kill a giant death robot
use the force luke use the force: have a atomic bomber hit a city with a nuke in it
we the people of the united states: as england get atacked by the united states and france then make peace with both, or as ether the united states or france declare war on england with the other

I'm a big fan of the first one! I'm still baffled by the fact that people are actually suggesting things!

Originally posted by Troller0001:

Originally posted by Jerry:

Say hello to my little friend: have a military city-state ally take your enemy's city
hello hi welcome, we are here two destroy you!: in one turn use an excom squad to kill a giant death robot
use the force luke use the force: have a atomic bomber hit a city with a nuke in it
we the people of the united states: as england get atacked by the united states and france then make peace with both, or as ether the united states or france declare war on england with the other

I'm a big fan of the first one! I'm still baffled by the fact that people are actually suggesting things! :p2cube:

when i first saw this i though i had to get in on this early before it gets big

Achievements from V2 were added in the inital post. Caligula, DohEnt, and Jerry may seem some 'familair' Achievements
(More achievemetns will come in V3, some of which might or might not be taken from this thread)

Originally posted by Troller0001:

Achievements from V2 were added in the inital post. Caligula, DohEnt, and Jerry may seem some 'familair' Achievements :sans:
(More achievemetns will come in V3, some of which might or might not be taken from this thread)

Wow thanks!

How about adding achievements for mods like JFD's civs, Englightenment Era mod, Sukritact's Events & Decisions or modpacks like Vox Populi? Because that would be great; nice work by the way!

I was planning on adding JFDLC achievements in v4, and maybe some in v3 if I can squeeze them in. (v3 will mainly contain bugfixing and a display update)
(Any suggestions are also ALWAYS appreciated!)

Unfortunately, I have little time on my hands right now...
And thanks for your kind words

No problem! I was flicking through the guides for the game and stumbled upon this one: Community Made Challenges: SID MEIER'S CIVILIZATION V . It seems that some achievements are already implemented in the mod. Suggestions for this are pretty good.

Yes, several achievements are indeed community-made challenges!
I've never seen that guide though, so thanks for the link!