really fun game, I thoroughly enjoyed my playthrough. The tops have a great weight to them and the way they interact with the environment (moving crates, the "dink" sfx, etc) make for a very immersive experience. I really appreciate the controls being so simple to figure out, and they have a good amount of depth to them still. The charge up shield combo is sickkkkk and super fun to pull off. I absolutely love the spinny cowboy boss and the wild west setting. I liked how the first boss would show cracking damage to his sprite as he took damage and the rivers flooding halfway through the battle was an awesome twist. The music is solid.
My big criticism is with the readability of the art. There is no clear art direction and many of the assets used clash strongly with others and sometimes have poor visibility with the rest of the game. The first fight in particular the player blends into the background and is difficult to distinguish from everything else. I think a more consistent art style across the whole game would help a lot, and maybe adding a thicker outline to the player/boss/projectiles to make them more readable. The UI is adequate but could use a little love too.
Overall, I think you have a great application of spin with a very fun core mechanic and some pretty unique and interesting boss fights. The charge/block combo and the flooding the rivers of the first map stand out as particularly good moments. Cool ass entry and keep up the good work!!