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.
Escaped Rapture.
Finished the game without using Vita-Chambers.
Finished the game on the hardest difficulty level.
Headed to the surface on the side of Sinclair's escape pod.
Found every Power to the People weapon upgrade in the game.
Completed all research on every subject in Rapture.
Found or purchased all 11 basic Plasmid types.
Reunited with your original Little Sister.
Fully upgraded to the maximum number of Plasmid Slots.
Saved every Little Sister and spared Grace, Stanley and Gil.
Gained access to Lamb’s stronghold.
Dealt with every Little Sister.
Found 100 audio diaries.
Fully upgraded one Plasmid to the Level 3 version.
Uncovered the secret of Dionysus Park.
Killed 30 enemies using only Traps.
Gathered 600 ADAM with Little Sisters.
Killed 50 enemies using only hacked Security.
Hacked 30 machines at a distance with the Hack Tool.
Maxed out one Research Track.
Got through a Gather with no damage and no one getting to the Little Sister.
Paid your respects to the founder of Rapture.
Completed your first non-private match.
Defeated 3 Big Daddies without dying during the fight.
Defeated the Preacher.
Spent 2000 dollars at Vending Machines.
Confronted Lamb’s lieutenant in Pauper’s Drop.
Researched a Splicer with the Research Camera.
Installed the third upgrade to a weapon.
Bought one Plasmid or Tonic Slot at a Gatherer's Garden.
Joined forces with Sinclair in Ryan Amusements.
Defended yourself against the Big Sister without dying.
Hacked one of each kind of machine.
Adopted a new Little Sister for the first time.
Upgraded a weapon at a Power to the People Station.
Defended yourself against Lamb's assault in the train station.
Killed an enemy with its own projectile.
Used the Hack Tool to hack an object at a distance.
Found your way back into the ruins of Rapture.
Score your first kill in a non-private match.
Become a Big Daddy for the first time in a non-private match.
Take down your first Big Daddy in a non-private match.
Save your first Little Sister in a non-private match.
Complete your first trial in a non-private match.
Achieve Rank 10.
Achieve Rank 20.
Achieve Rank 30.
Achieve Rank 40.
Win your first non-private match.
Play at least one non-private match on each multiplayer map.
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!
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
Earn 36 stars in the Protector Trials
Earn an A rank in all Protector Trials
Completed all bonus Protector Trials
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