Here is the full list of all 20 Regions Of Ruin achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Kill 1,000 Rabbits, no remorse for vermin.
You've collected 10,000,000 gold, it's time to go swimming!
Do over 100,000 dmg in one hit.
It seems that you have found yourself a money tree! You've collected 1,000,000 gold.
Max out T3+ stockpile with raw ores.
Your settlement is coming along nicely, fully max all buildings.
Kill 100 Cave Creatures, who you gonna call?
Take 10,000 arrows, be one with the porcupine.
Block over 1,000 DMG from one hit.
Do over 10,000 dmg in one hit.
Back Stab 100 Enemies
With all that hard work, you have finally gathered 10,000
Kill 100 Goblins, at least the air smells nicer now.
Deflect 1,000 Projectiles, so how many home runs?
Kill 10 enemies in one attack.
Do over 100 dmg in one hit.
Do over 1,000 dmg in one hit.
Kill 100 Rabbits. More meat for the stove.
Stun 10 enemies in one attack.
Block over 100 DMG from one hit.