There are ten secret achievements, two of which are currently unknown.
Defeated Dr. Steinman - 15 points - Defeat the crazed Dr. Steinman.
Defeated Peach Wilkins - 15 points - Defeat Peach Wilkins.
Restored the Forest - 15 points - Restore the forests of Arcadia.
Completed Cohen's Masterpiece - 30 points - Complete Sander Cohen's great masterpiece.
Defeated Andrew Ryan - 30 points - Defeate Andrew Ryan.
Broke Fontaine's Mind Control - 30 points - Break Fontaine's mind control.
Defeated Atlas - 100 points - Defeat Atlas.
Became a Big Daddy - 30 points - Become a Big Daddy.
Xbox360Cheats.com is an unofficial resource with Xbox 360 cheats provided by members of the public. We are usually unable to test submitted Xbox 360 cheats, so please use them at your own risk.