Ah I get it, it’s a “Boss” rush, very clever! The game felt a little slippery, controls-wise. I think when repairing an item, you might want to set player velocity to zero. Otherwise, if you accidentally hold left/right for 0.1 seconds after pressing repair, your character just keeps sliding and eventually exists repair range.
I wasn’t sure exactly what was happening in the second boss; the first time I did it alone, but when I died I had an NPC helping me the second time and two music tracks were playing at once.
I think your take on the theme is really clever! The art is also quite solid. I love the shadowy foggy look, it’s really well-done. Nice!