It's a bit buggy, but the gameplay system here is really nice. I too encountered the bug with the soldier who infinitely spawns spears out of his head, it's pretty hilarious. It also seemed like I died in two hits, and that the standard punch did no damage to enemies.
The aesthetics feel a bit like Kirby, but the weapon switching reminds me of a Mega Man Zero game. There's something charming about the design here that makes me think, "a younger version of me would have been in LOVE with this game." It's inviting and somewhat cute, but also has cool character designs and flashy attacks.