Got through a Gather with no damage and no one getting to the Little Sister.

Defeated 3 Big Daddies without dying during the fight.

Defended yourself against the Big Sister without dying.

Adopted a new Little Sister for the first time.

Upgraded a weapon at a Power to the People Station.

Used the Hack Tool to hack an object at a distance.

Use 15 enemies as human shields

Kill 400 enemies with assault rifles, submachine guns or shotguns

Customize a primary weapon to high aggro

Complete Chapter 2 on any difficulty level

Make a positive coop morality choice

Complete game on New Recruit.

Hack all locks.