Play Gun Mayhem Hacked Below
All guns and levels unlocked + Key hacks :  Unlimited lives,  Get a random weapon,  Upgrade your character,  Level + 1 for the leveled missions. Keys 2 and 3 also give you unlimited dynamite. Note : default keys are Arrows + [ and ] to shoot/dynamite. You can change these in the title screen!
Gun Mayhem Unblocked
Action packed arena shooter. Take on either computer AI characters or do battle against friends and shoot them from the platforms. Look out for weapons upgrades and new weapons to help you become the arena champion.