Full list of all 68 Zombie Army Trilogy achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox One.
Played as every playable character
At least 25 Fire Demons extinguished
Successfully did everything you were asked by Survivors
At least 25 Summoners silenced
Over 10,000 limbs lopped
At least 50 Super Elites bested
Hunted down every last hidden Gold Bar
Answered a phone call from Hell. It was a wrong number
At least 100 Zombie Snipers taken out
Army of Darkness completed
All Chapters completed on Sniper Elite difficulty
Spotted and destroyed every Bottle of Blood
The Keep completed
Forest of Corpses completed
Retrieved hot goods from a Chainsaw Elite
Put the tortured souls in the Forest out of their misery
City of Ashes completed
Performed unlikely yet successful surgery
Investigated a possessed doll and lived to regret it
Committed foul murder
At least 5000 enemies killed
Achieved an unbroken 10-headshot streak
Tower of Hellfire completed
Terminal completed
Crucible of Evil completed
Gateway to Hell completed
Got at least 20 enemies with one explosion
Landed the final blow on at least 20 Super Elites in co-op
Revived injured companions at least 50 times
Reached Wave 10 in Horde Mode – Dead Man's Bluff
Reached Wave 10 in Horde Mode – Flood of Tears
Reached Wave 10 in Horde Mode – Waves of Despair
Reached Wave 10 in Horde Mode – No Sanctuary
At least 500 Skeletons destroyed
Helped out companions under direct enemy attack at least 50 times
Freight Train of Fear completed
Killed at least 5 enemies with one sniper bullet
Lightened a Super Elite's wallet
Wiped out the tainted wildlife around the Folterschloss
Got at least 15 enemies with one explosion
Got at least 10 enemies with one explosion
Got a score of 5,000 with a single sniper round
Purgatory completed
Fired shots over 50km in total
Reached at least Wave 10 in Horde Mode and had the highest score by the end
Reached at least Wave 10 in Horde Mode and had the most gold medals at the end
Reached Wave 10 in Horde Mode – Dead End
Raised your Chain Count to at least 30
Raised your Chain Count to at least 20
Got a headshot on a Heavy Armour Zombie without removing his helmet first
Prevented at least 20 enemies from getting up
Subway to Hell completed
Sent an Occult General back to Hell
Library of Evil completed
At least 50 Suicide Zombies denied
Labyrinth of Death completed
Engaged in a 4-player co-op game and beat a Campaign level
Cathedral of Resurrection completed
Village of the Dead completed
Killed at least 20 enemies while incapacitated
Over 1,000 limbs lopped
Killed at least 500 enemies with headshots
Acquired a Panzerfaust
Shot a Suicide Zombie's grenade – that'll teach him
Acquired the Preacher
Showed a Zombie Sniper how it's done – got him in mid-air
Raised your Chain Count to at least 10
Put the boot into at least 50 enemies