Really fun game! I didn't master all the techniques in the short time I played but there were moments of brilliance when everything came together on my end and I was able to kill everything on screen in moments. I think you know this already and I can see you put in some work into it but the tutorial is still rather cryptic when it comes to kicks & projectile parries. It'd be nice if you included slow-mo videos that also displayed inputs to show how things are done properly. Maybe it'd be worth it to have other tutorial levels just for practicing those techniques forever--but this might just be unnecessary if the upgraded tutorial is good enough. Also, it'd probably be a good idea to have more feedback so that way it's obvious for the player when you dodge, kick, or parry. The dodge in particular is hard to tell because the sprite just turns red--bit of hitstop for all of them might be good. But aside from the tutorial I only have one minor suggestion: it'd be nice if I could toggle the trigger instead of hodling down the entire time! Other than that no complaints--the art is great and there's a lot of cool details like the pieces of the armor falling & being littered about the stage as the mech takes damage! Music and sound effects are solid as well, the jump sfx has a nice bassy heft to it, and the parry/kick has a nice pneumatic feel.
Overall, this is really polished and a good game. I'm excited to get more! Here's the video of my playthrough, I hope it helps!