Full list of all 68 BioShock 2 achievements worth 1,400 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 18 achievements worth 400 Gamerscore.
Found your way back into the ruins of Rapture.
Defended yourself against Lamb's assault in the train station.
Joined forces with Sinclair in Ryan Amusements.
Confronted Lamb’s lieutenant in Pauper’s Drop.
Defeated the Preacher.
Uncovered the secret of Dionysus Park.
Gained access to Lamb’s stronghold.
Reunited with your original Little Sister.
Headed to the surface on the side of Sinclair's escape pod.
Buy one Plasmid or Tonic Slot at a Gatherer's Garden.
Fully upgrade to the maximum number of Plasmid Slots.
Upgrade any weapon at a Power to the People Station.
Install the third and final upgrade to any of your weapons.
Find all 14 Power to the People weapon upgrades in the game.
Use the Hack Tool to hack an object at a distance.
Successfully hack at least one of every type of machine.
Hack 30 machines at a distance with the Hack Tool.
Research a Splicer with the Research Camera.
Max out one Research Track.
Max out research on all 9 research subjects.
Defeat 3 Big Daddies without dying during the fight.
Adopt a new Little Sister for the first time.
Gather 600 ADAM with Little Sisters.
Fully upgrade one of your Plasmids to the level 3 version at a Gatherer's Garden.
Find or purchase all 11 basic Plasmid types.
Defend yourself against the Big Sister without dying.
Kill 50 enemies using only hacked Security.
Kill 30 enemies using only Traps.
Kill an enemy with its own projectile
Get through a Gather with no damage and no one getting to the Little Sister.
Spend 2000 dollars at Vending Machines.
Either Harvest or Save every Little Sister in the game.
Finish the game on the hardest difficulty level.
Save every Little Sister and choice character.
Finish the game without using Vita-Chambers.
Find 100 audio diaries.
Score your first kill in a non-private match.
Complete your first non-private match.
Become a Big Daddy for the first time in a non-private match.
Take down your first Big Daddy in a non-private match.
Save your first Little Sister in a non-private match.
Complete your first trial in a non-private match.
Achieve Rank 10.
Achieve Rank 20.
Achieve Rank 30.
Achieve Rank 40.
Paid your respects to the founder of Rapture.
Win your first non-private match.
Play at least one non-private match on each multiplayer map.
Play at least one non-private match on each downloadable content map.
Win a non-private match in each of the 6 new maps.
Use Rebirth to start again!
Earn 6 stars in the Protector Trials
Earn 18 stars in the Protector Trial
Earn 36 stars in the Protector Trials
Earn an A rank in all Protector Trials
Completed all bonus Protector Trials
Collect 100% of the ADAM in a single Protector Trial
Collect 50% of the ADAM available in all Protector Trials
Reached Rapture Central Computing Operations
Reached Computer Core Access
Escaped Minerva's Den
Wrested control of the Thinker from Reed Wahl
Destroy all 10 Vacuum Bots in Minerva's Den
Got 9999 points in one game of Spitfire
Kill a Lancer Big Daddy
Resolve all the Little Sisters in Minerva's Den