Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Ana	Save Ana!
Arcade Mode	Unlock Arcade mode!
Automatic Shotgun	Get an Automatic Shotgun
Bat hunting	Kill over 75 bats in Arcade mode (Without dying)
Castle	Unlock the castle area!
Dungeon	Unlock the dungeon area!
Ghost hunter	Kill over 50 ghosts in Arcade mode (Without dying)
Great Arsenal	Unlock 10 weapons
Grenade launcher	Get a lance grenades
Insect killer	Kill over 100 insects (Without dying)
Jungle	Unlock the jungle area!
Laser weapon	Get a laser weapon
Machine Gun .50	Get a Machine Gun .50
Mountain	Unlock the mountain area
Mummy hunter	Kill over 100 zombies in Arcade mode (Without dying)
Ninja hunting	Kill over 150 ninjas in Arcade mode (Without dying)
Portable Machine Gun	Get an UZI
Rifle	Get an Rifle
Rocket launcher	Get a rocket launcher
Zombie hunter	Kill over 300 zombies in Arcade mode (Without dying)