Wow, this was pretty incredible! That was like a fully-fledged game! I had fun exploring and each boss was unique and I think the just the right amount of challenge. I loved that it felt like a whole world with lore and what felt like a good amount to explore. I thought the art style was charming and I loved all the details like the Bestiary and drops about the GDFG community. I think the degree of challenge was just right, and the mechanic created interesting choices for the player.
Biggest piece of feedback is having more feedback from hitting enemies, especially the first gear boss, would've been helpful. I wasn't quite sure if I was doing the right thing and hitting enemies sometimes.
Also, what I think was a "bug" - after I beat the Zachavillain, when I said I didn't want to look for the rest of the colors, it took me back to the last point where I died.
Really awesome stuff!