Complete the game on the hardest difficulty setting.

Unlocked: 9 Jan 2013 01:35 pm

Complete the game without harvesting any Little Sisters.

Unlocked: 9 Jan 2013 01:35 pm

The player has defeated Atlas

Unlocked: 9 Jan 2013 01:34 pm

Successfully invent at least 100 items.

Unlocked: 9 Jan 2013 01:16 pm

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

Unlocked: 9 Jan 2013 12:51 pm

The player has become a Big Daddy.

Unlocked: 9 Jan 2013 12:45 pm

Find every audio diary.

Unlocked: 9 Jan 2013 12:40 pm

Either Harvest or Rescue every Little Sister in the game

Unlocked: 9 Jan 2013 12:27 pm

Acquire all upgrades for all weapons.

Unlocked: 9 Jan 2013 12:26 pm

Fully upgrade five weapons.

Unlocked: 9 Jan 2013 11:08 am

The player has broken Fontaine's mind control

Unlocked: 9 Jan 2013 10:49 am

Successfully complete 50 hacks.

Unlocked: 9 Jan 2013 10:35 am

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

Unlocked: 9 Jan 2013 10:21 am

The player has entered Sander Cohen's personal quarters.

Unlocked: 9 Jan 2013 10:21 am

Fully upgrade four weapons.

Unlocked: 9 Jan 2013 10:01 am

Max out all possible research.

Unlocked: 8 Jan 2013 11:41 pm

Fully research the Nitro Splicer.

Unlocked: 8 Jan 2013 11:41 pm

The player has defeated Andrew Ryan

Unlocked: 8 Jan 2013 11:32 pm

Fully research the Bouncer.

Unlocked: 8 Jan 2013 11:10 pm

Purchased every slot in all four Plasmid and Tonic tracks

Unlocked: 8 Jan 2013 10:26 pm

Fully upgrade three weapons.

Unlocked: 8 Jan 2013 10:25 pm

Fully research the Little Sister.

Unlocked: 8 Jan 2013 10:25 pm

Successfully invented all possible ammo types.

Unlocked: 8 Jan 2013 10:17 pm

The player has completed Sander Cohen's great masterpiece

Unlocked: 8 Jan 2013 09:59 pm

Purchased every slot in one of the Plasmid or Tonic tracks

Unlocked: 8 Jan 2013 09:35 pm

Take at least one photo in every research group.

Unlocked: 8 Jan 2013 09:32 pm

Fully upgrade two weapons.

Unlocked: 8 Jan 2013 09:08 pm

Fully research the Spider Splicer.

Unlocked: 8 Jan 2013 08:59 pm

Hit the jackpot at a slot machine

Unlocked: 8 Jan 2013 08:17 pm

The player has restored the forests of Arcadia

Unlocked: 8 Jan 2013 08:10 pm

Fully research the Rosie.

Unlocked: 8 Jan 2013 08:05 pm

Successfully invent at least one item.

Unlocked: 8 Jan 2013 07:38 pm

Fully research the Houdini Splicer.

Unlocked: 8 Jan 2013 07:16 pm

Fully upgrade one weapon.

Unlocked: 8 Jan 2013 07:11 pm

Fully research the Thuggish Splicer.

Unlocked: 8 Jan 2013 06:53 pm

Acquire at least one weapon upgrade.

Unlocked: 8 Jan 2013 05:00 pm

The player has defeated Peach Wilkins

Unlocked: 8 Jan 2013 04:57 pm

Purchase one slot in any Plasmid or Tonic track

Unlocked: 8 Jan 2013 04:50 pm

Fully research the Leadhead Splicer.

Unlocked: 8 Jan 2013 04:37 pm

Take at least one Research Photo of a Splicer.

Unlocked: 8 Jan 2013 04:13 pm

Take a Research Photo of the highest grade.

Unlocked: 8 Jan 2013 04:13 pm

The player has defeated the crazed Dr. Steinman

Unlocked: 8 Jan 2013 03:24 pm

Successfully hack a safe.

Unlocked: 8 Jan 2013 02:52 pm

Successfully hack a security camera.

Unlocked: 8 Jan 2013 02:45 pm

Successfully hack a vending machine.

Unlocked: 8 Jan 2013 02:38 pm

Successfully hack a turret.

Unlocked: 8 Jan 2013 02:34 pm

Successfully hack a security bot.

Unlocked: 8 Jan 2013 02:28 pm

Perform at least one successful hack.

Unlocked: 8 Jan 2013 02:28 pm

Successfully complete the Welcome To Rapture Level.

Unlocked: 8 Jan 2013 02:26 pm

Shock an enemy in the water.

Unlocked: 8 Jan 2013 02:21 pm

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

Unlocked: 9 Jan 2013 01:35 pm