It's a pretty silly game, I like the art it's cute and the music is a banger, I like it but it's very hard to understand. I didn't get that the only way to deal damage was with the cannon and that it automatically shoots and you just have to aim it, which is a neat concept. I'd like if you could make it spin in the other direction because if you overshoot it's game over most of the time. There is little to no feedback if you hit the boss, maybe make the boss sprite flash white or having an SFX play when he is hit, that'd also help with knowing if I hit the boss when they are at the right or the left because aiming in those directions is very hard because of the perspective, it's also very hard to spot projectiles that come from those directions because they look flat at certain angles, maybe make it so that the sprites always face the camera no matter what.