Full list of all 68 BioShock 2 achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 60 achievements, and there is 1 DLC pack containing 8 achievements.
Became a Big Daddy for the first time in a non-private match.
Achieved Rank 40.
Achieved Rank 10.
Achieved Rank 30.
Won your first non-private match.
Won a non-private match in each of the 6 new maps.
Earned 18 stars in the Protector Trials
Took down your first Big Daddy in a non-private match.
Paid your respects to the founder of Rapture.
Played at least one non-private match on each downloadable content map.
Scored your first kill in a non-private match.
Completed your first non-private match.
Completed your first trial in a non-private match.
Used Rebirth to start again!
Collected 100% of the ADAM in a single Protector Trial
Earned 6 stars in the Protector Trials
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.
Found or purchased all 11 basic Plasmid types.
Reunited with your original Little Sister.
Fully upgraded to the maximum number of Plasmid Slots.
Found 100 audio diaries.
Saved every Little Sister and spared Grace, Stanley and Gil.
Gained access to Lamb's stronghold.
Fully upgraded one Plasmid to the Level 3 version.
Completed all research on every subject in Rapture.
Dealt with every Little Sister.
Killed 30 enemies using only Traps.
Uncovered the secret of Dionysus Park.
Gathered 600 ADAM with Little Sisters.
Defeated the Preacher.
Hacked 30 machines at a distance with the Hack Tool.
Spent 2000 dollars at Vending Machines.
Killed 50 enemies using only hacked Security.
Confronted Lamb's lieutenant in Pauper's Drop.
Maxed out one Research Track.
Installed the third upgrade to a weapon.
Defeated 3 Big Daddies without dying during the fight.
Researched a Splicer with the Research Camera.
Bought one Plasmid or Tonic Slot at a Gatherer's Garden.
Got through a Gather with no damage and no one getting to the Little Sister.
Joined forces with Sinclair in Ryan Amusements.
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.
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.
Saved your first Little Sister in a non-private match.
Achieved Rank 20.
Played at least one non-private match on each multiplayer map.
Earned 36 stars in the Protector Trials
Earned an A rank in all Protector Trials
Completed all bonus Protector Trials
Collected 50% of the ADAM available in all Protector Trials
Escaped Minerva's Den
Wrested control of the Thinker from Reed Wahl
Reached Computer Core Access
Destroyed all 10 Vacuum Bots in Minerva's Den
Resolved all the Little Sisters in Minerva's Den
Reached Rapture Central Computing Operations
Killed a Lancer Big Daddy
Got 9999 points in one game of Spitfire