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