Copied from a report on Discord:

I Join my friend in his session to play and we got to the 1st room on floor 1 and my game crashed upon the door trying to close. Upon reboot I lost all my meta progression. Is there a way to fix this or do I have to deal with it?  I've read that it also can happen multiple times, so I'm going to wait on playing more of this game until this bug is fixed. Still a fun game tho.