Here is the full list of all 15 Love Sucks: Night One achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Survived Night One
Finished Night One with Anna
Finished Night One with Jan
You fixed it
Anna gave you something back
Survive Time with Jan
No Glove, No Love
Met a Non-Ghost
They make them this big?
Don't Stop
You're alive aren't you?
So Quickly
Wait, what?
Learned Something about the World
Prayed at an Altar