Nice game! Environment looks very interesting and after reading your description I see what you were going for.
Of course it was very ambitious and it seems that feature creep was definitely your nemesis - for instance I like that there is combat and even different weapons, but given that the idea with the door changing the level is complex enough you could have probably just kept that as your main feature and put combat in the "stretch" pile. For game jams, usually one simple (but interesting and fun) mechanic is enough.
Nonetheless nice try, don't cut yourself short and I would definitely play an updated version if you make one!