Achieve Rank 40.

Unlocked: 9 Jul 2010 05:56 pm

Achieve Rank 30.

Unlocked: 5 Jul 2010 01:48 pm

Achieve Rank 20.

Unlocked: 2 Jul 2010 10:17 am

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

Unlocked: 20 Jun 2010 05:23 pm

Achieve Rank 10.

Unlocked: 20 Jun 2010 03:33 pm

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

Unlocked: 20 Jun 2010 08:08 am

Complete your first trial in a non-private match.

Unlocked: 19 Jun 2010 02:17 pm

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

Unlocked: 16 Jun 2010 04:47 pm

Complete your first non-private match.

Unlocked: 16 Jun 2010 11:49 am

Win your first non-private match.

Unlocked: 16 Jun 2010 11:49 am

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

Unlocked: 16 Jun 2010 11:42 am

Score your first kill in a non-private match.

Unlocked: 16 Jun 2010 11:42 am

Finish the game on the hardest difficulty level.

Unlocked: 16 Jun 2010 06:19 am

Escaped Rapture.

Unlocked: 14 Jun 2010 11:16 am

Finish the game without using Vita-Chambers.

Unlocked: 14 Jun 2010 11:16 am

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

Unlocked: 14 Jun 2010 11:14 am

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

Unlocked: 14 Jun 2010 10:49 am

Find or purchase all 11 basic Plasmid types.

Unlocked: 14 Jun 2010 09:52 am

Max out research on all 9 research subjects.

Unlocked: 14 Jun 2010 09:36 am

Reunited with your original Little Sister.

Unlocked: 14 Jun 2010 09:32 am

Fully upgrade to the maximum number of Plasmid Slots.

Unlocked: 14 Jun 2010 09:32 am

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

Unlocked: 14 Jun 2010 08:43 am

Gained access to Lamb’s stronghold.

Unlocked: 14 Jun 2010 08:40 am

Find 100 audio diaries.

Unlocked: 14 Jun 2010 08:30 am

Either Harvest or Save every Little Sister in the game.

Unlocked: 14 Jun 2010 08:19 am

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

Unlocked: 13 Jun 2010 06:03 pm

Uncovered the secret of Dionysus Park.

Unlocked: 13 Jun 2010 01:50 pm

Gather 600 ADAM with Little Sisters.

Unlocked: 13 Jun 2010 01:00 pm

Max out one Research Track.

Unlocked: 3 Jun 2010 11:21 am

Killed 50 enemies using only hacked Security.

Unlocked: 2 Jun 2010 03:01 pm

Defeated the Preacher.

Unlocked: 1 Jun 2010 05:18 pm

Confronted Lamb’s lieutenant in Pauper’s Drop.

Unlocked: 1 Jun 2010 05:28 am

Kill 30 enemies using only Traps.

Unlocked: 1 Jun 2010 04:04 am

Spend 2000 dollars at Vending Machines.

Unlocked: 1 Jun 2010 03:43 am

Defeat 3 Big Daddies without dying during the fight.

Unlocked: 1 Jun 2010 03:42 am

Killed an enemy with its own projectile.

Unlocked: 1 Jun 2010 03:40 am

Research a Splicer with the Research Camera.

Unlocked: 1 Jun 2010 03:35 am

Hack 30 machines at a distance with the Hack Tool.

Unlocked: 1 Jun 2010 03:24 am

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

Unlocked: 1 Jun 2010 03:21 am

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

Unlocked: 31 May 2010 06:15 pm

Joined forces with Sinclair in Ryan Amusements.

Unlocked: 31 May 2010 05:59 pm

Defended yourself against the Big Sister without dying.

Unlocked: 31 May 2010 05:54 pm

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

Unlocked: 31 May 2010 01:53 pm

Paid your respects to the founder of Rapture.

Unlocked: 31 May 2010 01:12 pm

Successfully hack at least one of every type of machine.

Unlocked: 31 May 2010 01:00 pm

Adopted a new Little Sister for the first time.

Unlocked: 31 May 2010 12:30 pm

Upgrade any weapon at a Power to the People Station.

Unlocked: 31 May 2010 12:16 pm

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

Unlocked: 31 May 2010 12:08 pm

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

Unlocked: 31 May 2010 11:21 am

Found your way back into the ruins of Rapture.

Unlocked: 31 May 2010 11:18 am

Escaped Minerva's Den

Unlocked: 4 Sep 2011 07:59 am

Wrested control of the Thinker from Reed Wahl

Unlocked: 4 Sep 2011 07:53 am

Reached Computer Core Access

Unlocked: 3 Sep 2011 07:18 pm

Resolve all the Little Sisters in Minerva's Den

Unlocked: 3 Sep 2011 07:11 pm

Destroy all 10 Vacuum Bots in Minerva's Den

Unlocked: 3 Sep 2011 06:50 pm

Got 9999 points in one game of Spitfire

Unlocked: 3 Sep 2011 05:53 pm

Reached Rapture Central Computing Operations

Unlocked: 3 Sep 2011 02:07 pm

Kill a Lancer Big Daddy

Unlocked: 3 Sep 2011 09:56 am

Completed all bonus Protector Trials

Unlocked: 18 Mar 2011 06:04 pm

Earn an A rank in all Protector Trials

Unlocked: 18 Mar 2011 05:06 pm

Earn 36 stars in the Protector Trials

Unlocked: 18 Mar 2011 04:58 pm

Collect 50% of the ADAM available in all Protector Trials

Unlocked: 18 Mar 2011 01:55 pm

Earn 18 stars in the Protector Trial

Unlocked: 18 Mar 2011 01:38 pm

Earn 6 stars in the Protector Trials

Unlocked: 18 Mar 2011 04:33 am

Collect 100% of the ADAM in a single Protector Trial

Unlocked: 18 Mar 2011 04:21 am

Use Rebirth to start again!

Unlocked: 25 Jan 2012 06:57 pm

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

Unlocked: 15 Oct 2011 01:34 pm

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

Unlocked: 17 Sep 2011 03:32 pm