BioShock 2 achievements

6.42%

Get a Bigger Bucket

Collect 50% of the ADAM available in all Protector Trials

6.45%

Acid Test

Earn 18 stars in the Protector Trial

7.03%

Little Moth

Achieved Rank 20.

7.49%

Litmus Test

Earn 6 stars in the Protector Trials

7.49%

Perfect Protector

Collect 100% of the ADAM in a single Protector Trial

9.00%

Man About Town

Played at least one non-private match on each multiplayer map.

9.18%

Mother Goose

Saved your first Little Sister in a non-private match.

9.43%

Garbage Collection

Destroy all 10 Vacuum Bots in Minerva's Den

10.15%

Parasite

Achieved Rank 10.

13.55%

Against All Odds

Finished the game on the hardest difficulty level.

14.06%

ADAM Addict

Resolve all the Little Sisters in Minerva's Den

14.20%

Two-Bit Heroics

Completed your first trial in a non-private match.

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