Instructions
Start a new game of "Nazi Zombies." You can select any map desired.
Press "R1" to shoot zombies as they appear in the room. Alternatively, press "R2" to throw grenades and press "R3" to stab at zombies.
Walk over the Max Ammo power-up when it falls. This power-up is in the shape of a small rectangle, representing an ammunition box. When it falls is random, but it will always fall after the first round of zombies.
Hold down the "R1" button to release a fury of bullets on the zombies. After 30 seconds have passed, your ammunition will return to normal.