Found Taro's Food Offering Relic.

Learned the Bow Ability.

Complete Left Behind

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

Win the water gun fight

Play the Jak X game in Left Behind

Survive all of Ellie's jokes

Find all training manuals

Break into every locked door using shivs

Find all Firefly pendants

While in stealth, turn off the spotlight generator in Pittsburgh

Complete Part 1

Upgrade and then break one of every melee weapon