This game made me mad. The potential knows no limits here!
First things first: It's great. It's really great. But as raw as a diamond can get. I love beat em ups so this is a perfect entry for me. But in this state it hurts to play, because you can see traces of a really good game.
The good things: I absolutely love the main mech design! The levels were cool. I liked the story and humor. And it is always nice to see good 3D games made in Godot!
The things which made me mad: Combat is too "spongy", not crisp at all. You mash punch and that's it. No real feedback from the enemy, no real satisfaction. There is no real difference between kicking, punching, or throwing cars at your enemies. The moves sometimes did not work. You mentioned, that you have to backdash, but even the backdash sometimes did not work. When the player health reached zero, I was still alive.
I suggest you go to your "Spar" market and buy a couple of liters of juice, because the game really needs it.
Don't get me wrong: the base is brilliant. I had fun. But I couldn't stop imagining how the game could look like. It is probably due to time constraint as always. I imagine you were even more tired than the tired frog in the credits. I would have loved if you switched focus on the first level alone and made the combat more fun, but the story was really nice. I dig that kind of humor! I suffer with you guys here :')
It would be super cool if you continue to work on this game. If so, I wish you best of luck!!