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