cool idea! i like the theming of the game, especially the intro, and the animation style is cool. i also think the attack has a good feel to it- sort of like castlevania or zelda 2, where timing is critical thanks to the long cooldown. i ran into a few bugs here (and ended up getting some bonus hearts in the top right corner by launching myself really high), but the only frustrating thing was the flying enemies in the final area not swooping down for a few minutes. i also didn't feel super incentivized to use the shield with the amount of enemies around.