"Mr. Bubbles-- No!" - 20 GamerPoints - Take down your first Big Daddy in a non-private match.
Against All Odds - 30 GamerPoints - Finish the game on the hardest difficulty level.
All Plasmids - 20 GamerPoints - Find or purchase all 11 basic Plasmid types.
All Weapon Upgrades - 20 GamerPoints - Find all 14 Power to the People weapon upgrades in the game.
Big Brass Balls - 25 GamerPoints - Finish the game without using Vita-Chambers.
Big Spender - 15 GamerPoints - Spend 2000 dollars at Vending Machines.
Bought a Slot - 5 GamerPoints - Buy one Plasmid or Tonic Slot at a Gatherer's Garden.
Choose the Impossible - 50 GamerPoints - Achieve Rank 40.
Dealt with Every Little Sister - 50 GamerPoints - Either Harvest or Save every Little Sister in the game.
Disgusting Frankenstein - 10 GamerPoints - Become a Big Daddy for the first time in a non-private match.
First Research - 5 GamerPoints - Research a Splicer with the Research Camera.
Fully Upgraded a Plasmid - 10 GamerPoints - Fully upgrade one of your Plasmids to the level 3 version at a Gatherer's Garden.
Fully Upgraded a Weapon - 10 GamerPoints - Install the third and final upgrade to any of your weapons.
Grand Daddy - 25 GamerPoints - Defeat 3 Big Daddies without dying during the fight.
Little Moth - 20 GamerPoints - Achieve Rank 20.
Man About Town - 10 GamerPoints - Play at least one non-private match on each multiplayer map.
Master Gatherer - 30 GamerPoints - Gather 600 ADAM with Little Sisters.
Master Hacker - 20 GamerPoints - Hack 30 machines at a distance with the Hack Tool.
Master Protector - 15 GamerPoints - Get through a Gather with no damage and no one getting to the Little Sister.
Max Plasmid Slots - 10 GamerPoints - Fully upgrade to the maximum number of Plasmid Slots.
Mother Goose - 20 GamerPoints - Save your first Little Sister in a non-private match.
One Research Track - 20 GamerPoints - Max out one Research Track.
Parasite - 10 GamerPoints - Achieve Rank 10.
Prolific Hacker - 20 GamerPoints - Successfully hack at least one of every type of machine.
Proving Grounds - 20 GamerPoints - Win your first non-private match.
Rapture Historian - 40 GamerPoints - Find 100 audio diaries.
Research Master - 20 GamerPoints - Max out research on all 9 research subjects.
Skin Job - 20 GamerPoints - Achieve Rank 30.
Trap Master - 15 GamerPoints - Kill 30 enemies using only Traps.
Two-Bit Heroics - 10 GamerPoints - Complete your first trial in a non-private match.
Unnatural Selection - 10 GamerPoints - Score your first kill in a non-private match.
Upgraded a Weapon - 10 GamerPoints - Upgrade any weapon at a Power to the People Station.
Welcome to Rapture - 10 GamerPoints - Complete your first non-private match.