Learn the controls and beat the first level.
Kill the Zombie T-Rex.
Kill the Zombie T-Rex without picking up a Shotgun.
Kill Don Zombie.
Kill Don Zombie without picking up an SMG.
Kill King Shattinbricks.
Kill King Shattinbricks witout picking up a Flamethrower.
Kill the Super Ramen Samurai.
Kill the Super Ramen Samurai without picking up a Minigun.
Kill Professor Barry Brains and beat the game.
Kill Professor Barry Brains with 3 or more extra lives remaining.
Beat the game with a total score of 1,000,000 or more.
Beat the game with 5 or fewer total deaths.
Beat the game with your total accuracy being 70% or higher.
Beat the game with a total time of 45 minutes or less.
Collect a 1-Up crate and have 4 extra lives in total.
Collect a Shield crate.
Reach a weapon combo of x50 with the Shotgun before running out of ammo.
Reach a weapon combo of x100 with the SMG before running out of ammo.
Reach a weapon combo of x50 with the Flamethrower before running out of ammo.
Reach a weapon combo of x100 with the Minigun before running out of ammo.
Reach a weapon combo of x50 with the Rifle before running out of ammo.
In the Tutorial, shoot all 8 surrounding zombies without missing a shot.
In Survival mode, complete wave 10 of the Prehistoric area.
In Survival mode, complete wave 10 of the 1930s area.
In Survival mode, complete wave 10 of the Ancient Egypt area.
In Survival mode, complete wave 10 of the Feudal Japan area.
In Survival mode, complete wave 10 of the Future area.
Reach a score multiplier of x100.
Beat any level using only the Pistol and secondary weapons.
Kill 20 zombies without moving and without having the Shotgun or any secondary weapon equipped.
In Survival mode, survive for 30 seconds without using weapons.
Beat any level without using the Pistol.
Equip every primary and secondary weapon without returning to the main menu.
Kill 10 or more zombies with a single Mine.
Kill 10 or more enemies using a single Grenade.
Kill 10 or more enemies using a single Bazooka.