It's a good start! For full disclosure, I ran this in a VM, which almost definitely affected the framerate, and likely also neutered the gamepad support (so I used keyboard). That's on me.
I enjoy mindless hack-and-slash games that give me a chance, so I like where this is going. It reminded me very vaguely of Golden Axe for some reason (maybe the music? maybe the axe? I have no idea why.)
Maybe I just suck, but I kept thinking the gameplay would change up if I just stayed alive a little longer. But I think the monsters just kept coming faster. I think I made it 80 seconds or so after a few tries. If you haven't tried out "Get Chopping!" yet (https://itch.io/jam/brackeys-6/rate/1176980), you might want to check that out. I think it's a good example of how to keep the game interesting through a variety of art, attacks, and other spoiler-territory stuff.
Other random thoughts:
Glad to see gamepad support - a lot of entries seem to be skipping it, but it adds so much to enjoyment when the mappings are in place.
At first I tried just jumping up the stairs on the right of the map, but gave up when I realized the map wouldn't scroll further. For some reason I was expecting a wider map, but once I realized I was stuck, i just camped in the center of the map.
It didn't seem like it was necessary to jump to attack any of the baddies. Maybe some flying monsters, or power-ups, or something would have helped encourage jumping.
I wish there were a way to see the game's controls without quitting the game and re-launching it.
I'm not familiar with Corgi Engine's WebGL support, but in the future, if you have any option to export the game to WebGL, that'd be killer from a "security vs performance" perspective.
I see the bone counter has 3 digits (000) - but I was really slow at collecting bones. It made me wonder if cool dudes are collecting 100+ bones and I'm just playing wrong.