Collect all trophies

Engage in all optional conversations

Find all Firefly pendants

Break into every locked door using shivs

Leave Ellie hanging after a job well done

While in stealth, turn off the spotlight generator in Pittsburgh

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

Defeat Black Fang without getting hit

Win the brick throwing contest

Find all workbench tools

Fully upgrade a weapon

Open all safes

Find a comic