Basic controls feel nice, moving and jumping goes where I want no problem, but grappling has a lot of variables that are hard to manage as a player (momentum, angle, is the level expecting me to jump or double-tap this time?, don't hit walls, is it going to aim for the correct thing?, etc), it's frustrating to have your swinging instantly interrupted by hitting a wall or the floor, and the level is a bit too unforgiving with its platforming so there's a really narrow margin of error. I picture a real first level being a lot easier, think the homeworlds from Spyro for example. It took me a long while to figure out the double-tapping too, the tutorial doesn't work well.
I love the vibe you're going for, the world, the style, characters and the music, it brings me joy and a tear to my eye. Like others said, don't sell yourself short by calling it a ripoff because it's a lot more than that, I expect great things from you, keep it up. I could easily spend a long time playing the full version of this.