Pet Buckley the dog

Survive all of Ellie's jokes

Open all safes

While in stealth, turn off the spotlight generator in Pittsburgh

Upgrade and then break one of every melee weapon

Pick up Frank's note after it's discarded

Find a Firefly pendant

Use bricks or bottles to lure an infected into attacking a human

Defeat Black Fang without getting hit

Win the brick throwing contest

Defeat Catwoman

Find all armor upgrades