Perform 20 headshots from the rope

Defeat 10 enemies in a row, alternating gunplay and hand-to-hand

Defeat 4 enemies with the same explosion (all explosive items and weapons apply)

Complete 5 matches in Multiplayer

Spawn 10 Sidekicks in Multiplayer

Complete the Uncharted Multiplayer Introduction

Just prior to City Chase, stand perfectly still for 30 seconds (stage demo fail)

Climb to the very top of the Clocktower in the City

Find 50 treasures

Pull 20 enemies over when hanging from a ledge

Complete the game in explorer mode

Complete the game in moderate mode

Defeat 50 enemies from-the-hip or blind-firing