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