Full list of all 68 BioShock 2 achievements worth 1,400 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 18 achievements worth 400 Gamerscore.
Achieved Rank 40.
Achieved Rank 30.
Achieved Rank 20.
Played at least one non-private match on each multiplayer map.
Achieved Rank 10.
Saved your first Little Sister in a non-private match.
Took down your first Big Daddy in a non-private match.
Reunited with your original Little Sister.
Headed to the surface on the side of Sinclair's escape pod.
Escaped Rapture.
Fully upgraded to the maximum number of Plasmid Slots.
Found every Power to the People weapon upgrade in the game.
Found or purchased all 11 basic Plasmid types.
Finished the game on the hardest difficulty level.
Finished the game without using Vita-Chambers.
Paid your respects to the founder of Rapture.
Uncovered the secret of Dionysus Park.
Gained access to Lamb’s stronghold.
Completed all research on every subject in Rapture.
Gathered 600 ADAM with Little Sisters.
Fully upgraded one Plasmid to the Level 3 version.
Killed 50 enemies using only hacked Security.
Killed 30 enemies using only Traps.
Dealt with every Little Sister.
Saved every Little Sister and spared Grace, Stanley and Gil.
Found 100 audio diaries.
Defeated the Preacher.
Killed an enemy with its own projectile.
Spent 2000 dollars at Vending Machines.
Got through a Gather with no damage and no one getting to the Little Sister.
Defeated 3 Big Daddies without dying during the fight.
Completed your first trial in a non-private match.
Became a Big Daddy for the first time in a non-private match.
Maxed out one Research Track.
Confronted Lamb’s lieutenant in Pauper’s Drop.
Hacked 30 machines at a distance with the Hack Tool.
Researched a Splicer with the Research Camera.
Installed the third upgrade to a weapon.
Joined forces with Sinclair in Ryan Amusements.
Bought one Plasmid or Tonic Slot at a Gatherer's Garden.
Defended yourself against the Big Sister without dying.
Adopted a new Little Sister for the first time.
Hacked one of each kind of machine.
Upgraded a weapon at a Power to the People Station.
Defended yourself against Lamb's assault in the train station.
Used the Hack Tool to hack an object at a distance.
Found your way back into the ruins of Rapture.
Won your first non-private match.
Completed your first non-private match.
Scored your first kill in a non-private match.
Play at least one non-private match on each downloadable content map.
Win a non-private match in each of the 6 new maps.
Use Rebirth to start again!
Completed all bonus Protector Trials
Earned an A rank in all Protector Trials
Earned 36 stars in the Protector Trials
Collected 50% of the ADAM available in all Protector Trials
Earned 18 stars in the Protector Trials
Earned 6 stars in the Protector Trials
Collected 100% of the ADAM in a single Protector Trial
Escaped Minerva's Den
Wrested control of the Thinker from Reed Wahl
Reached Computer Core Access
Resolved all the Little Sisters in Minerva's Den
Destroyed all 10 Vacuum Bots in Minerva's Den
Got 9999 points in one game of Spitfire
Reached Rapture Central Computing Operations
Killed a Lancer Big Daddy