• Contrail - If the player has [Alien Engine] , its flame will turn green, igniting enemies with permanent green fire . [Alien Engine] also grants flight while held.
• Neo Tech, Yo - If the player has [Bionic Leg] or [Shock Rounds] , Mutation's beam turns blue, leaves puddles of electrified water, and its ammo capacity is increased to 800. The player is immune to electricity while Mutation is held.
• Venom Veins - If the player has [Monster Blood] , [Bloody Eye] , [Bloody 9mm] , [Bloodied Scarf] , or [Blood Brooch] , Mutation poisons enemies.
• Mutation is not a proper goop -spraying weapon, unlike the [Mega Douser] , the [Plunger] , or the [Fossilized Gun] . Unlike those three, Mutation's "stream" loses all momentum and immediately ends when you release the trigger.

Create 10 guns using any Muncher .