Adds a shop that has 8 unique and interesting buffs/items that benefit and help your game for the cost of your score. Adds a knife weapon that can kill zombies and deal damage to bosses if used precisely. Also adds more minor things like sneaking (which hides you from zombies that are far away), new menu art, new player art, varied zombie art, nerfs to the ice zombie, a gun inventory to switch between them and more.