Here is the full list of all 15 Endix achievements.
The base game contains 0 achievements, and there is 1 DLC pack containing 15 achievements.
Visit all booths and activations
Use all dance emotes
Jump from the tallest point of Endix
Vote for your favourite game in Endix terminals
Survive the Endix Climb Trial mini-game
Escape the Endix Maze mini-game
Use the Photo mode to capture a Selfie
Talk to any NPC
Chill for 2 minutes inside an elevator
Jump 5 times in a row
Use any emote
Use every emote available
Fast-travel to any location
End up in the water