You killed your first 1000 zombies.

You killed 5000 zombies.

You killed 10000 zombies.

You killed 20000 zombies.

You killed 50000 zombies.

You survived Treeland Dusk.

You survived Dark Tunnel.

You survived Quiet Town.

You survived Quarantine Failure.

You reached 5000 high score points.

You reached 10000 high score points.

You reached 15000 high score points.

You reached 20000 high score points.

You reached 30000 high score points.

You've dealt 15000 damage using heavy machine gun.

You've dealt 50000 damage using heavy machine gun.

You've dealt 100000 damage using heavy machine gun.

You've dealt 15000 damage using minigun.

You've dealt 50000 damage using minigun.

You've dealt 100000 damage using minigun.

You've dealt 15000 damage using sniper rifle.

You've dealt 50000 damage using sniper rifle.

You've dealt 100000 damage using sniper rifle.

You've dealt 15000 damage using flamethrower.