Mutators are special options that activate specific changes to be made to the game as you play. Unlock the following Mutators by performing the corresponding tasks:
MUTATOR - HOW TO UNLOCK Big Explosions - In any mode, unlock the Hail Mary ribbon 100 times. Big Head - In Horde Mode, unlock the Gold Horder medal. Comet - In Versus Mode, unlock the Gold Shock Trooper medal. Enemy Regeneration - In Arcade Mode, unlock the Silver Afficianado medal. Flower Blood - In Arcade Mode, unlock the Silver King of Cog medal. Friendly Fire - In Co-op Campaign, complete the co-op campaign with four players. Infinite Ammo - In Horde Mode, unlock the Combat Engineer ribbon 100 times. Instagib Melee - In Beast Mode, play as a Wretch and score 200 kills. Laugh Track - Unlock the Bronze Tour of Duty, For the Horde, I’m a Beast, and Warmonger medals. Must Active Reload - Unlock the Silver Active Reloader medal. Pinata - In Beast Mode, unlock the Gold Investor medal. Super Reload - In Versus Mode, unlock the Bronze Master at Arms medal. Vampire - In Versus Mode, unlock the Executioner ribbon 100 times.