I have ascended !
I would not have figured out you need to lose your sanity to reach the boss so I'm happy you put the indication in the game page.
The game is great, yet the best part of it was easily figuring out that the way I kept dying was putting a key into my hand. I'm curious now, was it a joke or a bug?
I love the game, I especially love how pleasant to control and snappy it is, I like that combat is very fast and lethal, my problem with this kind of traditional real-time games can be that sometimes it can take long, here it never does. The controls and presentation are perfect, the game sounds and looks great, the art is both very good and very consistent. I really like that despite some randomized placement of items, which fits the gameplay loop and replaying this small game a couple of times to eventually win, you still have some good handcrafted layouts here. The invisible fiends are really cool, losing your equipment when you get hit hard is cool too. The power of the boss is right on point and I love that, I can't claim enough how much that I needed to retry a couple of times to finally win the game increased my enjoyment.
There's a rare case of crash.
Overall this is a great entry that I had ton of fun playing, congratulations.