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