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

Defeat Black Fang without getting hit

Revive an incapacitated Buddy.

Collect $1000 Vektan in a mission.

Find all Firefly pendants

Open all safes

Collect all comics

Complete Part 1

Find all workbenches

Pet Buckley the dog

Fully upgrade a weapon

While in stealth, turn off the spotlight generator in Pittsburgh