Here is the full list of all 12 Daedalic Complex achievements.
Defeat 100 enemy troops.
Defeat 300 enemy troops.
Defeat 500 enemy troops.
Finish the tutorial stage.
Finish up the 4th stage.
Upgrade a weapon to its maximum.
Discover 5 EXP Shrines.
Use up 100 items in total.
Use up 300 items in total.
Use up 500 items in total.
Meet a tragic end.
See the light once again.