Yes but HK doesn’t emphasize platforming as the primary type of gameplay, except in the White Palace (which you apparently liked. I did too).
For a pure platformer similar to HK, you could try an HK mod. I don’t know how many there are like that but there’s a very hard platformer one: https://www.youtube.com/watch?v=pum1SmqEG68
Celeste is maybe a little similar (more similar than Mario) because it has air dash. Also something about the pacing and movement feel I guess. There is some overlap in HK and Celeste speedrunners and community. I think it’s pretty common that people like both games. They’re pretty different though.
lol just switch weapons. Did you avoid spoilers and quit before getting other weapons? Yeah the diagonal was hard for me to get used to too so I switched off it. There are two weapons with straight down pogos that you can get reasonably early in the game. One of them is similar to HK’s weapon but I actually used the other one more (it’s bigger but slower).
I can give you hints on where to get them if you tell me what you’ve done so far, maybe share a screenshot of your map, and you want low-spoiler hints. Or maybe you can just play knowing they’re there somewhere.
It varies. One thing they do is full game no-reset runs. Gotta practice everything some and it doesn’t make sense to reset over mistakes when derusting.
Steel Soul is hard if you’re rusty too! Just go play silksong when you want to derust since you have a lot of that game left.