Zombiecarft has a variety of perks to keep up with your strength during higher waves. Juggernog makes you more resistent to zombies by increasing your health x2. Speed Cola speeds up the gameplay, you'll recharge, repair and revive twice as fast. Charge cola makes you hard to catch, drink this perk and gain faster mobility. Ex Static Drink is a strong drink that gives you the ability to push zombies away with electricity.