Use your Special for the first time
Use your Special 10 times
Use your Special 100 times
Defend your location for 10 waves
Defend your location for 20 waves
Defend your location for 30 waves
Defend your location for 40 waves
Defend your location for 50 waves
Defend your location for 100 waves
Die.
Die 10 times
Die 50 times
Die 100 times
Kill your first Zombie
Kill 100 Zombies
Kill 300 Zombies
Kill 500 Zombies
Kill 750 Zombies
Kill 1000 Zombies
Do a Headshot!
Find yourself a Secret Gift!
Get yourself a Trophy!
Upgrade Body Armor Lvl 1
Upgrade Body Armor Lvl 2
Upgrade Body Armor Lvl 3
Upgrade Body Armor Lvl 4
Upgrade Pistol Boost Points Earned Lvl 1
Upgrade Pistol Boost Points Earned Lvl 2
Upgrade Pistol Boost Points Earned Lvl 3
Upgrade Pistol Boost Points Earned Lvl 4
Upgrade Pistol Boost Points Earned Lvl 5
Unlock Shotgun
Upgrade Shotgun Increase Splash Damage Lvl 1
Upgrade Shotgun Increase Splash Damage Lvl 2
Upgrade Shotgun Increase Splash Damage Lvl 3
Upgrade Shotgun Increase Splash Damage Lvl 4
Upgrade Shotgun Increase Splash Damage Lvl 5
Upgrade Shotgun Increase Splash Radius Lvl 1
Upgrade Shotgun Increase Splash Radius Lvl 2
Upgrade Shotgun Increase Splash Radius Lvl 3
Upgrade Shotgun Increase Splash Radius Lvl 4
Upgrade Shotgun Increase Splash Radius Lvl 5
Unlock Sniper
Upgrade Sniper Piercing Damage Lvl 1
Upgrade Sniper Piercing Damage Lvl 2
Upgrade Sniper Piercing Damage Lvl 3
Upgrade Sniper Piercing Damage Lvl 4
Upgrade Sniper Piercing Damage Lvl 5
Upgrade Sniper Boost Points Earned Lvl 1
Upgrade Sniper Boost Points Earned Lvl 2
Upgrade Sniper Boost Points Earned Lvl 3
Upgrade Sniper Boost Points Earned Lvl 4
Upgrade Sniper Boost Points Earned Lvl 5
Unlock Rocket Launcher