Thanks for checking it out!
WASD navigation should be an easy addition, but I honestly figured just using the mouse with keyboard controls would be easier. But I can get it in, for sure.
I do have some colliders on the outside of the boss room, since it's only supposed to be confined to the circle, but that should be it. I can take a look to see if there are any whacky collision issues and get hopefully them fixed.
And I'm glad someone noticed the flavor text! I like to put at least a little bit of story in my games, but this one didn't really feel like it would have a natural place that would interrupt the main flow of gameplay, so I settled for a middle ground, taking the Dark Souls approach and giving some upgrades a little lore blurb, in case players were interested and payed enough attention in the menus. But this is the first time I've seen anyone mention it in the feedback so far!
Thanks for taking the time to play, and for the helpful feedback!