Here is the full list of all 13 CORRUPTION achievements.
STAGE 1 Completed
STAGE 2 Completed
STAGE 3 Completed
STAGE 4 Completed
STAGE 5 Completed
STAGE 6 Completed
You finished the game in EASY
You finished the game in NORMAL
You finished the game in HARD
You played in Co-op
You've completed 100% of this game