Successfully invent at least one item.

Unlocked: 02 Sep 2007 22:58:44

Acquire at least one weapon upgrade.

Unlocked: 02 Sep 2007 22:32:58

The player has defeated Peach Wilkins

Unlocked: 02 Sep 2007 22:26:30

Take at least one Research Photo of a Splicer.

Unlocked: 02 Sep 2007 21:50:59

Take a Research Photo of the highest grade.

Unlocked: 02 Sep 2007 21:50:50

Purchase one slot in any Plasmid or Tonic track

Unlocked: 02 Sep 2007 21:35:20

The player has defeated the crazed Dr. Steinman

Unlocked: 01 Sep 2007 20:42:13

Successfully hack a safe.

Unlocked: 01 Sep 2007 20:28:06

Successfully hack a turret.

Unlocked: 01 Sep 2007 20:13:09

Successfully hack a vending machine.

Unlocked: 01 Sep 2007 20:08:03

Perform at least one successful hack.

Unlocked: 01 Sep 2007 19:49:19

Successfully hack a security bot.

Unlocked: 01 Sep 2007 19:49:19

Successfully complete the Welcome To Rapture Level.

Unlocked: 01 Sep 2007 19:44:20

Shock an enemy in the water.

Unlocked: 01 Sep 2007 19:39:33

The player has restored the forests of Arcadia

The player has completed Sander Cohen's great masterpiece

The player has defeated Andrew Ryan

The player has broken Fontaine's mind control

The player has defeated Atlas

Purchased every slot in one of the Plasmid or Tonic tracks

Purchased every slot in all four Plasmid and Tonic tracks

Fully upgrade one weapon.

Fully upgrade two weapons.

Fully upgrade three weapons.

Fully upgrade four weapons.

Fully upgrade five weapons.

Acquire all upgrades for all weapons.

Fully research the Thuggish Splicer.

Fully research the Leadhead Splicer.

Fully research the Spider Splicer.

Fully research the Houdini Splicer.

Fully research the Nitro Splicer.

Fully research the Rosie.

Fully research the Bouncer.

Fully research the Little Sister.

Take at least one photo in every research group.

Max out all possible research.

Successfully hack a security camera.

Successfully complete 50 hacks.

Successfully invent at least 100 items.

Successfully invented all possible ammo types.

Complete the game without harvesting any Little Sisters.

Collect or Invent 53 Tonics in the Physical, Engineering and Combat tracks.

Find every audio diary.

Complete the game on the hardest difficulty setting.

Either Harvest or Rescue every Little Sister in the game

The player has become a Big Daddy.

Hit the jackpot at a slot machine

The player has taken a picture of Sander Cohen's corpse

The player has entered Sander Cohen's personal quarters.

Complete the game on Hard difficulty without using a Vita-Chamber