Unlock the following modes by performing the corresponding tasks:
MODE - HOW TO UNLOCK 7 Days Of Hell - Beat Day 55. In this mode will be seven very long levels. All Weapons - Beat Day 55. In this mode you will be able to use all weapons and have inifinite ammo. Blackout - Beat Day 55. In this mode your view is shrunken to a small circle around your character. Radioactive zombies will become more visible. Chainsaw Mode - Beat a level using only the chainsaw, and without any environmental or Zombie Bait. In this mode you will be limited to the chainsaw and Zombie Bait. Hardcore Mode - Survive seven days without dying. In this mode you will only have one life. Turbo - Get a 100x multiplier. In this mode everything will move faster.