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