Stop the phone booth killer

A deadly game of hide and seek

We are legion

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Defeat 20 enemies with gunfire by aiming while hanging

Throw back a grenade and defeat two enemies at once

Stop the unstoppable

Last man standing

Find 20 treasures

Defend a human colony from attack

Defeat 50 enemies with hand-to-hand combat

Solve the first riddle