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