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