Here is the full list of all 185 IIN achievements.
The base game contains 25 achievements, and there is 1 DLC pack containing 160 achievements.
Push buttons using boxes 100 times
Start a multiplayer game
Beat the game on multiplayer
Beat the game on singleplayer
Beat the extra group
Complete the first group
Complete the second group
Complete the third group
Complete the forth group
Complete the fifth group
Complete the sixth group
Complete the seventh group
Complete the eigth group
Unlock the Time Attack
Discover the Circle box's special move
Discover the Triangle box's special move
Die 77 times
Hit another soul 9 times
Beat the game on Time Attack in under 80 minutes
Beat the game on Time Attack in under 60 minutes
Beat the game on Time Attack in under 40 minutes
Life's Worth
Beat Level 34 without enter on circle's box
Beat any level without touching the barrier
Complete all achievements
Level 6 Completed