Thank you! Yeah the level editior is kinda just what i used to build the rooms and relies heavily on the dev tools console, but it does work (most of the time).
I think all of the rooms are possible without taking damage, but im not sure because some of them (like the one with two skeletons at the top and bottom) were added with like 30 minutes left so i didnt check
also, there technically is a way to heal, but it only spawn 1 in every 20 down facing side rooms (because i didnt have time to make the full branching side rooms system that i wanted to make)
and yeah there was supposed to be a boss, but i ran out to add it (even though i had all of the assets for it ready :[ ) but i might go add the boss in once the jam ends