Thaks for feedback, it is actually good. 1, 2, 3 and 5 I`ve felt by myself, but didnt have enough time to implement it.
4 is a bit more complicated - I wanted to boss be unbeatable before some deaths, so It will deal you 5 damage initially to requare 2 health upgrades. I know that feals bad to get oneshoted, but all I was in time to do is add unskipable for 3 seconds text panel, that explains wtf just happened (also not a good, but timesaving move). Also Boss kill you in 15 seconds, so you need at least 1 damage upgrade, and than boss will do attack dodgeable only with stamina upgrade, so this 4 are requared. In perfect world I need to do different locks/keys to complete the boss, but it`s just prototype, and I bound myself to 48 hours time window in order to train before LD.
Also I never take theme as somesing essential, just inspiration. Every time boss kils you, dungeon grow bigger, so that is expanding i meant. But to find out that you need to do 1 run, and than complete 3 waves of 2 run, so it`s really not obvios, i undertand why many peaple miss it, or think its not enough.
Anyway, one more thx for you, I will create a couple more prototypes, and then test som GIFs. Which one will show itself ebst I will expand into commercial project. I also belive that this one has a good chance to win.