Achieve Rank 40.

Unlocked: 09 Jul 2010 17:56:28

Achieve Rank 30.

Unlocked: 05 Jul 2010 13:48:44

Achieve Rank 20.

Unlocked: 02 Jul 2010 10:17:20

Save your first Little Sister in a non-private match.

Unlocked: 20 Jun 2010 17:23:56

Achieve Rank 10.

Unlocked: 20 Jun 2010 15:33:12

Play at least one non-private match on each multiplayer map.

Unlocked: 20 Jun 2010 08:08:09

Complete your first trial in a non-private match.

Unlocked: 19 Jun 2010 14:17:11

Take down your first Big Daddy in a non-private match.

Unlocked: 16 Jun 2010 16:47:36

Complete your first non-private match.

Unlocked: 16 Jun 2010 11:49:07

Win your first non-private match.

Unlocked: 16 Jun 2010 11:49:07

Become a Big Daddy for the first time in a non-private match.

Unlocked: 16 Jun 2010 11:42:58

Score your first kill in a non-private match.

Unlocked: 16 Jun 2010 11:42:00

Finish the game on the hardest difficulty level.

Unlocked: 16 Jun 2010 06:19:42

Escaped Rapture.

Unlocked: 14 Jun 2010 11:16:48

Finish the game without using Vita-Chambers.

Unlocked: 14 Jun 2010 11:16:48

Headed to the surface on the side of Sinclair's escape pod.

Unlocked: 14 Jun 2010 11:14:43

Find all 14 Power to the People weapon upgrades in the game.

Unlocked: 14 Jun 2010 10:49:40

Find or purchase all 11 basic Plasmid types.

Unlocked: 14 Jun 2010 09:52:59

Max out research on all 9 research subjects.

Unlocked: 14 Jun 2010 09:36:02

Reunited with your original Little Sister.

Unlocked: 14 Jun 2010 09:32:48

Fully upgrade to the maximum number of Plasmid Slots.

Unlocked: 14 Jun 2010 09:32:48

Saved every Little Sister and spared Grace, Stanley and Gil.

Unlocked: 14 Jun 2010 08:43:30

Gained access to Lamb’s stronghold.

Unlocked: 14 Jun 2010 08:40:02

Find 100 audio diaries.

Unlocked: 14 Jun 2010 08:30:13

Either Harvest or Save every Little Sister in the game.

Unlocked: 14 Jun 2010 08:19:20

Fully upgrade one of your Plasmids to the level 3 version at a Gatherer's Garden.

Unlocked: 13 Jun 2010 18:03:33

Uncovered the secret of Dionysus Park.

Unlocked: 13 Jun 2010 13:50:40

Gather 600 ADAM with Little Sisters.

Unlocked: 13 Jun 2010 13:00:45

Max out one Research Track.

Unlocked: 03 Jun 2010 11:21:19

Killed 50 enemies using only hacked Security.

Unlocked: 02 Jun 2010 15:01:25

Defeated the Preacher.

Unlocked: 01 Jun 2010 17:18:38

Confronted Lamb’s lieutenant in Pauper’s Drop.

Unlocked: 01 Jun 2010 05:28:58

Kill 30 enemies using only Traps.

Unlocked: 01 Jun 2010 04:04:34

Spend 2000 dollars at Vending Machines.

Unlocked: 01 Jun 2010 03:43:10

Defeat 3 Big Daddies without dying during the fight.

Unlocked: 01 Jun 2010 03:42:28

Killed an enemy with its own projectile.

Unlocked: 01 Jun 2010 03:40:22

Research a Splicer with the Research Camera.

Unlocked: 01 Jun 2010 03:35:52

Hack 30 machines at a distance with the Hack Tool.

Unlocked: 01 Jun 2010 03:24:26

Install the third and final upgrade to any of your weapons.

Unlocked: 01 Jun 2010 03:21:44

Buy one Plasmid or Tonic Slot at a Gatherer's Garden.

Unlocked: 31 May 2010 18:15:48

Joined forces with Sinclair in Ryan Amusements.

Unlocked: 31 May 2010 17:59:19

Defended yourself against the Big Sister without dying.

Unlocked: 31 May 2010 17:54:32

Get through a Gather with no damage and no one getting to the Little Sister.

Unlocked: 31 May 2010 13:53:22

Paid your respects to the founder of Rapture.

Unlocked: 31 May 2010 13:12:15

Successfully hack at least one of every type of machine.

Unlocked: 31 May 2010 13:00:03

Adopted a new Little Sister for the first time.

Unlocked: 31 May 2010 12:30:54

Upgrade any weapon at a Power to the People Station.

Unlocked: 31 May 2010 12:16:53

Defended yourself against Lamb's assault in the train station.

Unlocked: 31 May 2010 12:08:33

Used the Hack Tool to hack an object at a distance.

Unlocked: 31 May 2010 11:21:31

Found your way back into the ruins of Rapture.

Unlocked: 31 May 2010 11:18:49

Escaped Minerva's Den

Unlocked: 04 Sep 2011 07:59:13

Wrested control of the Thinker from Reed Wahl

Unlocked: 04 Sep 2011 07:53:55

Reached Computer Core Access

Unlocked: 03 Sep 2011 19:18:37

Resolve all the Little Sisters in Minerva's Den

Unlocked: 03 Sep 2011 19:11:19

Destroy all 10 Vacuum Bots in Minerva's Den

Unlocked: 03 Sep 2011 18:50:23

Got 9999 points in one game of Spitfire

Unlocked: 03 Sep 2011 17:53:18

Reached Rapture Central Computing Operations

Unlocked: 03 Sep 2011 14:07:01

Kill a Lancer Big Daddy

Unlocked: 03 Sep 2011 09:56:10

Completed all bonus Protector Trials

Unlocked: 18 Mar 2011 18:04:18

Earn an A rank in all Protector Trials

Unlocked: 18 Mar 2011 17:06:38

Earn 36 stars in the Protector Trials

Unlocked: 18 Mar 2011 16:58:19

Collect 50% of the ADAM available in all Protector Trials

Unlocked: 18 Mar 2011 13:55:45

Earn 18 stars in the Protector Trial

Unlocked: 18 Mar 2011 13:38:57

Earn 6 stars in the Protector Trials

Unlocked: 18 Mar 2011 04:33:44

Collect 100% of the ADAM in a single Protector Trial

Unlocked: 18 Mar 2011 04:21:19

Use Rebirth to start again!

Unlocked: 25 Jan 2012 18:57:38

Win a non-private match in each of the 6 new maps.

Unlocked: 15 Oct 2011 13:34:40

Play at least one non-private match on each downloadable content map.

Unlocked: 17 Sep 2011 15:32:53