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.
Completed all research on every subject in Rapture.
Found 100 audio diaries.
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
Collected 100% of the ADAM in a single Protector Trial
Earned 6 stars in the Protector Trials
Used Rebirth to start again!
Achieved Rank 40.
Achieved Rank 30.
Won a non-private match in each of the 6 new maps.
Saved your first Little Sister in a 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.
Achieved Rank 20.
Achieved Rank 10.
Completed your first trial in a non-private match.
Became a Big Daddy for the first time in a non-private match.
Won your first non-private match.
Took down your first Big Daddy in a non-private match.
Completed your first non-private match.
Scored your first kill in a non-private match.
Escaped Rapture.
Finished the game without using Vita-Chambers.
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.
Saved every Little Sister and spared Grace, Stanley and Gil.
Gained access to Lamb's stronghold.
Dealt with every Little Sister.
Fully upgraded one Plasmid to the Level 3 version.
Uncovered the secret of Dionysus Park.
Gathered 600 ADAM with Little Sisters.
Defeated the Preacher.
Killed 50 enemies using only hacked Security.
Spent 2000 dollars at Vending Machines.
Confronted Lamb's lieutenant in Pauper's Drop.
Hacked 30 machines at a distance with the Hack Tool.
Maxed out one Research Track.
Defeated 3 Big Daddies without dying during the fight.
Researched a Splicer with the Research Camera.
Installed the third upgrade to a weapon.
Joined forces with Sinclair in Ryan Amusements.
Killed an enemy with its own projectile.
Defended yourself against the Big Sister without dying.
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.
Killed 30 enemies using only Traps.
Hacked one of each kind of machine.
Paid your respects to the founder of Rapture.
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.
Destroyed all 10 Vacuum Bots in Minerva's Den
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
Got 9999 points in one game of Spitfire
Reached Rapture Central Computing Operations
Killed a Lancer Big Daddy