Slippery 10 Finish The Prison Break with a score under 1:10 Massacre 20 Kill everyone in a mission Silent Withdrawal 20 Complete Banque Albert without being seen Technician 20 Finish any mission in single player with only wrenches Bring the Bleach 20 Use C4 to gib three attacking guards simultaneously without dying in single player Dem Bones 10 Revive an online teammate I Work Alone 60 Complete Campaign Act I Single Player Whacked 40 Win an online PvP match A Gentleman's Agreement 60 Complete Campaign Act II Unscathed 40 Complete each mission once without dying Time To Retire 80 Achieve all four trophies on every solo and co-op mission Secret Achievements Secret Achievement 20 Continue playing to unlock this secret achievement. Source - X360A
