Hi! Thank you for playing and for the feedback
Yes, the bugs that you mentioned in your comment are the first on my to do list because I didn't have time during the jam to polish those things and now that is finished I can start to fix those things.
After you break the door a boss should appear and when you kill it the game would end but the game has a bug and after the first run the boss despawns and it doesn't respawn again.
Thank you for the feedback!