Hey! Let me make this clear that it would probably take me 10 days just to finish the art! so good work on the art and visuals. Although here are a bunch of my recommendations:
The boss really only has two attacks (far as i played) and in no way are those too hard to dodge, but I hate the fact that i died with one hit, and i had to refresh the page to replay.
The boss really just comes down and becomes available to attack randomly, which is not bad but i would love to earn it! Like if the boss thrown me some cogs and i could attack and destroy them to stagger the boss. Also the boss’s health is way too much in this case
I also didn’t know i could double jump but i figured pretty fast
All and all, good job and I wish you the best on the next projects!