Here is the full list of all 18 Between Me and The Night achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Get to the end of 1000 Knights.
Listen to all the cassettes.
Clean up the broken objects in the apartment.
Complete the house without being caught by any ghost.
Complete level 3 of Generic Knight.
Complete the Thunder Rangers poster in the High School.
Find the 3 strange medicine bottles.
Let the Keykeeper catch you while holding the hall pass.
Put all the soldier and knight toys in their respective bases, in the House.
Finish the game.
Finish the apartment level.
Finish the high school level.
Don’t get hit by enemies while in the Otherworld.
Finish the house level.
Enter the Otherworld for the first time.
Finish the tutorial.