Here is the full list of all 42 Guns n Zombies achievements.
Destroy 1200 Crystal Walls.
Complete all levels on HELL difficulty.
Complete all levels on HARD difficulty.
Complete the game.
Complete the N'Aliens campaign.
Kill 2000 enemies with auto rifles.
Kill 4000 enemies with sniper guns.
Buy any Electric rifle.
Complete all levels on 3 stars.
Kill 20000 enemies.
Every battle scene has a materia. Find them all!
Kill 2000 enemies with sniper guns.
Kill 4000 enemies with shotguns.
Kill 4000 enemies with turrets.
Complete 8 battles on HELL difficulty.
Kill 2000 enemies with shotguns.
Complete game with Warrior.
Kill 4000 enemies with grenade launchers.
Kill 10000 enemies.
Buy any special ability in the store.
Kill 2000 enemies with grenade launchers.
Complete 8 battles on 3 stars
Kill 5000 enemies.
Kill 900 enemies with another enemy attack.
Сure once.
Fully upgrade any turret.
Use any special ability 100 times.
kill 15 enemies in 1 seconds with any gun.
Kill 400 enemies with another enemy attack.
Don't use turrets while 10 battles.
Buy 5 weapons in store.
Play 30 minutes in battles.
Fully upgrade any weapon.
Don't use med kits 15 battles in sequence.
Complete game with Mechanic.
Complete game in cooperative mode.
Kill 4000 enemies with auto rifles.
Play 15 minutes in cooperative mode.
Buy any 3rd level tower during battle.
Complete the game as Medic.
Kill 2000 enemies with Electric rifles.
Kill 4000 enemies with Electric rifles.