This is a nice concept. I did enjoy it, but at the same time I also felt frustrated while playing it. I did not go all the way to the end; I gave up when I had the sticky block and two other blocks and had to get past the 6 red spikey things.
Wall jumps were a bit annoying. That is, the practice of pressing alternating direction keys on my keyboard per jump was a bit much; to the point of actually hurting my hand (maybe I have some early onset carpel tunnel? But I doubt it).
Is it intended that pressing against the wall while falling will slow your rate of descent? This looks like an application of Godot’s move_and_slide behavior. It felt a little strange to me, but I thought it was OK.