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