Ha ! Thanks for the in depth answer. No it was pretty clear I had to go back with the teleport, I think I just missed the food in the boss room :) I did take a look around before teleporting though. I'll try to do it again if I have time, to see what I missed.
And yes player progression would be super cool indeed. Obviously you did already a lot in a week, we all make compromise ahah.
For the progression it makes me think that something along the Sol cesto progression could be nice. Gold you have to get abilities during the run and gold you save for meta progression. Anyway great game !