Unlock the following modes by performing the corresponding tasks:
CHEAT FUNCTION - CHEAT CODE Invisibility - Get 300 kills as Jigsaw in multiplayer. Invulnerability - Get 300 kills as Silver Sable in multiplayer. Regenerator - Get 225 kills as Barracuda in multiplayer. Sprint for Life - Beat Story Mode level 1. Weapon Upgrade - Beat Story Mode level 3. Berserk - Perform 250 kills using the Rhino in multiplayer. Blood Gain - Perform 150 kills using the CMG in multiplayer. Link Feeder - Perform 300 kills using the Enforcer M8 in multiplayer. Motion Sensor - Perform 175 kills as Microchip in multiplayer. Rampage - Perform 275 headshots in multiplayer. Thick Plates - Complete story mode level 2.