Stealth take-down 5 enemies

Reach a 10-heart friend level with 8 people.

Perform 10 combo buddy takedowns

Complete all trials on Moderate (difficulty) in Multiplayer

Revive 10 Allies in Multiplayer

Complete the Uncharted Multiplayer Introduction

Completed a stage without taking any damage on Hard difficulty or above

Achieved five-star ranks in all Coliseum Attack stages

Achieved five-star ranks in all Time Attack stages

Defeated all bosses using Diamond Knack

Defeated the Giant Orb using Dark Knack

Defeated Gundahar's Robot using Massive Knack

Defeated 20 enemies as Stealth Knack and completed the chapter