I really liked this one. It's a little janky, but it's the flavor of janky that I like. In the end, I didn't manage to beat it.
The jumping felt mostly fine to me, but the second double jump did create a little ambiguity for me at times. I think if the second jump had some kind of feedback (like the player sprite changing) it may have helped. That said, it wasn't a major issue for me.
The rain mechanic is very cool, a tight and demanding platformer game where you're passively trying to avoid rain makes for a very interesting dynamic. That said, it is difficult to see over the lighter backgrounds.
While I don't personally mind having to restart the game from the beginning, I would have liked if there were some kind of persistence between lives. Making my way across a bunch of screens with precise, meticulous jumps, only to immediately fall in a pit on the farthest screen I've reached hurt my motivation to keep trying after a while. It made it hard to practice and get better at the really tough parts.
The atmosphere in this game is really cool. It's very strange and surreal, I dig the sound design a lot.