Find grifo tool in the city.
Find relatory.
Kill 30 zombies.
Find the flesh encapsulated.
Find the infected blood.
Kill 60 zombies.
Kill 120 zombies.
Destroy a trap machinegun.
Get 5000 points in survival mode.
Kill the evil thing with the professional.
Kill the evil thing with the sheriff.
Finish an area with very little blood.
Damage your self with radiation.
Play 100% Pixel Zumbi.
Kill all zombies in 4th forest area.
Use knife 30 times in zombies.
Kill 300 zombies.
Kill the forest snake in 20 seconds.
Exit the evil thing (eye) boss without taking damage.
Exit a level without ammo.
Get 2 machineguns.
Get 9000 points in survival mode.
kill 500 zombies.
Kill 1000 zombies.
Kill 2000 zombies in survival mode.
Get 12000 points in survival mode.