For the equivalent trophies, see BioShock 2 PS3 Trophies.
For the equivalent achievements on Steam, see BioShock 2 Steam Achievements.

The following are unlockable achievements for BioShock 2 on the Xbox 360 and PC.

Single Player Edit

Bought a Slot Edit

5G BoughtaSlotBS2Achieve
Purchase one Plasmid Slot or Tonic Slot at a Gatherer's Garden.

Max Plasmid Slots Edit

10G MaxPlasmidSlotsBS2Achieve
Fully upgrade to the maximum number of Plasmid Slots.
Note: The player can Achieve this Achievement before receiving Eleanor's Summon Plasmid and Plasmid slot, by purchasing Plasmid slot upgrade 1, 2, 3 and 4 for 40, 50, 60 and 70 ADAM and the fifth slot upgrade in Fontaine Futuristics which also costs 70 ADAM. Both last Plasmid slot upgrades cost 70 ADAM.

Upgraded a Weapon Edit

10G UpgradedaWeaponBS2Achieve
Upgrade a weapon at a Power to the People Station.

Fully Upgraded a Weapon Edit

10G FullyUpgradedaWeaponBS2Achieve
Install the third upgrade to a weapon.

All Weapon Upgrades Edit

20G AllWeaponUpgradesBS2Achieve
Find all 14 Power to the People weapon upgrades in the game.
Note: There aren't enough Power to the People machines to fully upgrade every single weapon in the player's arsenal.

Prolific Hacker Edit

20G ProlificHackerBS2Achieve
Hack one of each kind of machine.

Master Hacker Edit

20G MasterHackerBS2Achieve
Hack 30 machines at a distance with the Hack Tool.

First Research Edit

5G FirstResearchBS2Achieve
Research a Splicer with the Research Camera.

One Research Track Edit

20G OneResearchTrackBS2Achieve
Max out one Research Track.

Research Master Edit

20G ResearchMasterBS2Achieve
Complete all research on every subject in Rapture.
Note: Some enemies will stop appearing at certain points in the game, preventing the player from ever researching them again. It is suggested the player researches as much as possible as early as possible. Example: The Thuggish Splicer stops appearing after Delta leaves Pauper's Drop.

Grand Daddy Edit

25G GrandDaddyBS2Achieve
Defeat 3 Big Daddies without dying during the fight.

Master Gatherer Edit

30G MasterGathererBS2Achieve
Gather 600 ADAM with Little Sisters.
Note: This is earned over all gathers, not just currently held or all in one gathering.

Fully Upgraded a Plasmid Edit

10G FullyUpgradedaPlasmidBS2Achieve
Fully upgrade one Plasmid to the Level 3 version.

All Plasmids Edit

20G AllPlasmidsBS2Achieve
Find or purchase all 11 basic Plasmid types.

Trap Master Edit

15G TrapMasterBS2Achieve
Kill 30 enemies using only Traps.

Master Protector Edit

15G MasterProtectorBS2Achieve
Finish a Gathering with no damage and no one getting to the Little Sister.

Big Spender Edit

15G BigSpenderBS2Achieve
Spend 2000 Dollars at vending machines.

Dealt with Every Little Sister Edit

50G DealtwithEveryLittleSisterBS2Achieve
Deal with every Little Sister.

Big Brass Balls Edit

25G BigBrassBallsBS2Achieve
Finish the game without using Vita-Chambers.

Rapture Historian Edit

40G RaptureHistorianBS2Achieve
Find 100 Audio Diaries.
Note: There are 129 total Audio Diaries in BioShock 2. It's okay to miss 29, but still highly suggested to search everywhere for as many diaries as possible.

Against All Odds Edit

30G AgainstAllOddsBS2Achieve
Finish the game on the hardest difficulty level.

The Protector Trials DLC Edit

Litmus Test Edit

5G LitmusTest
Earn 6 stars in the Protector Trials.

Acid Test Edit

10G AcidTest
Earn 18 stars in the Protector Trials.

Trial by Fire Edit

15G TrialByFire
Earn 36 stars in the Protector Trials.

Enemy of the Family Edit

15G EnemyOfTheFamily
Earn an A rank in all Protector Trials.

Guardian Angel (Secret) Edit

10G GuardianAngel
Complete all bonus Protector Trials.
Note: Can only be done after getting all 36 stars in Protector Trials.

Perfect Protector Edit

20G PerfectProtector
Collect 100% of the ADAM available in a single Protector Trial.

Get a Bigger Bucket Edit

25G GetABiggerBucket
Collect at least 50% of the ADAM available in all Protector Trials.

Minerva's Den DLC Edit

Garbage Collection Edit

10G GarbageCollection
Destroy all 10 Vacuum Bots in Minerva's Den.

Lancer Killer Edit

10G LancerKiller
Kill a Lancer Big Daddy.

ADAM Addict Edit

10G ADAMAddict
Resolve all the Little Sisters in Minerva's Den.

High Score (Hidden) Edit

10G HighScore
Get 9999 points in one game of Spitfire.

Login (Hidden) Edit

20G Login
Reach Rapture Central Computing Operations.

Root Access Granted (Hidden) Edit

20G RootAccessGranted
Reach Computer Core Access.

SUDO (Hidden) Edit

Wrest control of The Thinker from Reed Wahl.

Logout (Hidden)Edit

50 G (Xbox) / 30 G (PC) Logout
Escape Minerva's Den.

Multiplayer Edit

Welcome to Rapture Edit

10G WelcometoRaptureBS2Achieve
Complete your first non-private match.

Unnatural Selection Edit

10G UnnaturalSelectionBS2Achieve
Score your first kill in a non-private match.

Disgusting Frankenstein Edit

10G DisgustingFrankensteinBS2Achieve
Become a Big Daddy for the first time in a non-private match.

"Mr. Bubbles — No!" Edit

20G MrBubblesNoBS2Achieve
Take down your first Big Daddy in a non-private match.

Two-Bit Heroics Edit

10G TwoBitHeroicsBS2Achieve
Complete your first trial in a non-private match.

Mother Goose Edit

20G MotherGooseBS2Achieve
Save your first Little Sister in a non-private match.

Parasite Edit

10G ParasiteBS2Achieve
Achieve Rank 10.

Little Moth Edit

20G LittleMothBS2Achieve
Achieve Rank 20.

Skin Job Edit

20G SkinJobBS2Achieve
Achieve Rank 30.

Choose the Impossible Edit

50G ChoosetheImpossibleBS2Achieve
Achieve Rank 40.

Proving Grounds Edit

20G ProvingGroundsBS2Achieve
Win your first non-private match.

Man About Town Edit

10G ManAboutTownBS2Achieve
Play at least one non-private match on each multiplayer map.

Rapture Metro Pack DLC Edit

Aqua Incognita Edit

25G Aqua incognita
Play at least one non-private match on each downloadable content map.

Territorial Edit

25G Territorial
Win a non-private match in each of the 6 new maps.

Reincarnation Edit

100G Reincarnation
Use Rebirth to start again!
Note: The player does not need to buy the Metro Map Pack to get to level 50 in order to use rebirth.

Secret Achievements Edit

Savior Edit

25G SaviorBS2Achieve
Save every Little Sister and spare Grace, Stanley and Gil.

Adopted a Little Sister Edit

5G AdoptedaLittleSisterBS2Achieve
Adopt a new Little Sister for the first time.

Counterattack Edit

5G CounterattackBS2Achieve
Kill an enemy with their own projectile.

Distance Hacker Edit

5G DistanceHackerBS2Achieve
Use the Hack Tool to hack an object at a distance.

Unbreakable Edit

20G UnbreakableBS2Achieve
Defend yourself against a Big Sister without dying.

Look at You, Hacker Edit

15G LookatYouHackerBS2Achieve
Kill 50 enemies using only hacked Security.

9-Irony Edit

5G 9IronyBS2Achieve
Pay your respects to the founder of Rapture.
Note: To do this, use Telekinesis to pick up the golf club behind the first mannequin of Ryan encountered in the Ryan Amusements level, then throw it at the mannequin's head for the achievement. The golf club must hit his head, not the actual body, so if the player has dismembered the mannequin beforehand, he or she would need to find the head and shoot the club at it.

Daddy's Home Edit

10G DaddysHomeBS2Achieve
Find your way back into the ruins of Rapture.

Protector Edit

20G ProtectorBS2Achieve
Defend yourself against Lamb's assault in the train station.

Sinclair's Solution Edit

20G SinclairsSolutionBS2Achieve
Join forces with Sinclair in Ryan Amusements.

Confronted Grace Edit

10G ConfrontedGraceBS2Achieve
Confront Lamb's lieutenant in Pauper's Drop.

Defeated the Preacher Edit

20G DefeatedthePreacherBS2Achieve
Defeat the Preacher.

Nose for News Edit

20G NoseforNewsBS2Achieve
Uncover the secret of Dionysus Park.

Found Lamb's Hideout Edit

20G FoundLambsHideoutBS2Achieve
Gain access to Lamb's stronghold.

Reunion Edit

50G ReunionBS2Achieve
Reunite with your original Little Sister.

Heading to the Surface Edit

25G HeadingtotheSurfaceBS2Achieve
Head to the surface on the side of Sinclair's escape pod.

Escape Edit

100G EscapeBS2Achieve
Escape Rapture.

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