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