Upgrades increase the experience points per kill or the attack speed for each weapon.POWER UP WITH BATTERIESBatteries can also be spent to improve power-ups (battery magnet, auto run, and more), and buy boosts (extra lives or long starts).
Unlock new kill moves, such as the flying corkscrew.SLAUGHTER WITH SHARP BLADESUpgrade your collection of edged weapons, such as knives, scissors, cleavers, and hatchets.
