Pretty cool take on the theme! we don't see as many platformers where the character feels so heavy and much less athletic than the average platformer hero, that's a nice spin.
I like how it feels more like a puzzle where you have to figure out the right sequence of actions for each part as you keep going down. Once there were fire spiners and a ton of spikes I found it a bit frustrating so that's where I gave up.
Good job!