This is a really good game! I like the art and the sword throwing/grapple mechanics
This is a very minor thing but I think it would be more intuitive to left click a second time to recall the sword instead of middle mouse button
I was able to run it this time
I love the visuals and spinning upside down mechanic but I couldn't figure out how to open the second door (I assume I was supposed to put the cube somewhere but I didn't see where)
I was able to fly anywhere by repeatedly pressing Q so maybe you should make it so you can only spin when standing on the ground. I was also able to fly by holding the cube and looking straight down.