Play on easy, play the elf rogue and get "heals X HP from weapon kills" or "heals X HP every Y seconds".

The hidden "Iron Man" achievement only requires you to play 24hrs (in as many sessions as you want).

The 100,000 gold achivements can be done right after the tutorial, when you reach the dwarf town.
You can explore the whole area without doing any quest, giving easy access to a few chests. The last tunnel far from town is monster-less with 2 chests. Break barrels, open chests, loot monsters, sell stuff.
Save, exit, do it all over again.
For quicker gains, put points in charisma while playing the wizard or the rogue: everytime the bonus goes up, you buy cheaper and sell higher.

Going back and forth between the far end of the area and the guarded merchant before doing any quest will give tons of easy XP and take you to lvl 10 effortlessly. If you lack healing equipment and play the warrior, just go back to town and "speak" to the dwarven cleric to fully heal for free.


The weapon achievement can require a bit of luck. I was lvl 7 in the first area when I finally loot a scimitar.

The multiplayer achievement can be done with Remote Play Together. Only one copy of the game is needed. Launch the game, go to your friend list, click the RPT section, send the link to your friend. And voilà! (put the gmae volume down, maybe)
Launch a multiplayer LAN game. The game will not recognize your friend controller, ignore the message. Create or load a character. Then your friend can create or load a character. You're all set.
Note: the camera is controlled by both players...

By the end of the game, with the rogue you should easily get the "75 damage" achievement if you crit with your best skill and and a good weapon.

Some bugs are harmless like the missing textures on many equipments.

Others are frustrating like the unability to dodge UP with the elf or the halfing and a few invisible "soft" walls that stop range attacks.

And one is really annoying : ALWAYS SAVE BEFORE SELLING! Often the game intertwines items in the merchant's and your inventory. You select something... and you buy or sell the item below. If you keep stuff for a specific situation, while waiting to get the skill or level to use it, or to power up a multiplayer character, be super careful.

SAVE! OFTEN!

You don't save your position or progression in a quest, you only save you character. It means that if you die, you keep everything from you last save. If you think you can't finish a specific, combat heavy, unescapable step in any quest: loot everything you can, find a corner safe enough for 5sec, save and die or exit.
Upon dying or restarting, you current quest is abandoned, you have to redo everything. But if you saved, you have XP, equipment and gold!