50 dead zombies
600 dead zombies
Use a special weapon
wave 30
wave 20
You have worn the gas mask
You have survived radioactivity.
Wave 4, with a gun?
Reaches wave 7 without buying medicine.
Survive the zombie monks.
100 dead zombies in the village
buy the most expesive machine gun.
100 dead zombies in the headquarter.
100 dead zombies in the sewers.
Use three special weapons.