Full list of all 8 Yu Escape / Monday achievements. It takes around 0-1 hour to unlock all of the achievements in the base game on Windows.
The base game contains 6 achievements, and there is 1 DLC pack containing 2 achievements.
You finished the game!
You found the code!
Mhmmm stick it in!
You really like fanfiction!
You like them naughty!
It's comfier than it looks!
There's something behind there!
You have found 12 cosplay stamps!