I enjoyed this one quite a bit, it was fun to collect new tools and explore everything, and I liked the style and music!
The controls were good in terms of your abilities, being able to hold jump or the chain button was a nice touch. I wasn't a big fan of binding move to S and D instead of A and D, it was just awkward enough to kill me a few times. I would've used the arrow keys but ZXC were not bound.
The music was super cute and fit well. Adding physics to the lamp was a great detail, it was a lot of fun to run around with it.
I encountered a bug where I didn't need to open the chest at the bottom of the well, at some point once I went down, the chain just appeared in my inventory. The box was already opened when I found it.
Good entry, solid work, it actually kinda makes me want to make a metroidvania style game next time
Oh and it would've been really neat if you could use the lamp or the chain in some way in the boss fight as a sort of final test of what you learned. But I'm willing to guess you just didn't have enough time because that's how jams be