This is a very nice canvas of what a potential game could be. The movement mechanics are probably the most enjoyable part of the game for me right now. Doing cart-wheels around made it very satisfying to traverse around and the double-jumping did help give the game a sense of verticality. However, at times I found myself unable to use these abilities, either because I was attacked, or for reasons I wasn’t really able to tell. For some of them, like the cart-wheel, I figured crouching fixed it for me, but sometimes falling off a ledge because a double-jump didn’t seem to trigger slightly harmed the mobility experience to me.
As for the rest of the game there’s a lot of space here for a future game can be, but otherwise, there’s a lot to improve and still major lengths to go until I think I’d be able to see and experience the full vision of the game. If the focus of the game is combat, I’d start by adding considerable feedback to it, like flashes, health bars or floating damage numbers, and probably even some screenshake for when you get hit. Making sure that combat is satisfying will help this game in great lengths, as just the action of engaging in combat will be very satisfying.
Ultimately, I praise the will to do such a strong vision of a game but do consider the scope and which mechanics you want to get the players to be satisfied with. I’d suggest focusing on systems gradually (like I’ve suggested above, starting with combat would be wonderful) and add new mechanics on top progressively, as I can see there’s a plan for there to be a lot of moving pieces here.
Other than that, and closing such a lengthy comment with some deserved praise, I did think that the pixel art characters looked really charming and promising. Here’s hoping we see them in an even more animated state in the future. Good luck and cheers! 🐳