Here is the full list of all 26 Dead Maze achievements.
Reach maximum quality for each type of clothing gear
Reach level 100
Discover a treasure among an infected horde
Build 30 buildings
Find a roommate
Kill 20 infected Peruvians
Complete 30 daily missions
Rescue another player 20 times
Craft 30 items
Equip a protection kit
Witness an emergency meeting
Reach level 30
Trigger an elemental combo 30 times
Find out what's threatening Lakeview
Blow up a cafeteria
Deal with the Outrunner with Jared
Find Egon
Meet Jay
Reach level 10
Party with other players
Find a place to settle
Complete the tutorial
Complete 10 Adventures or Expeditions
Reach level 5 Threat
Complete 5 adventures or expeditions in maximum difficulty
Kill 5 infected only with the explosion of an unstable infected