Here is the full list of all 15 Dungeon Rats achievements.
Beat the final fight and earn your freedom
"I have a feeling we're not in Kansas anymore"
Beat the game solo on Easy
Beat the game solo on Normal
Beat the game solo on Hard
Pay the guards a visit
Have a chat with the Emperor
Eliminate all three gangs
Fight your way to the upper level
Prove your worth to Barca
Win an all-expense paid trip to Maadoran!
Recruit all 11 party members
Beat the game on Easy Ironman
Beat the game on Normal Ironman
Beat the game on Hard Ironman