Good game idea. Simple to pick up and play. The artwork was nice. And it's a cool way of implementing the chain reactions.
For some feedback, the explosion sound is a bit loud compared to the BGM. And hard mode is impossible. Not only does the Chonky Goon not move fast enough, the chain reactions don't reach quick enough either for the fast moving enemies. When I hit one of them, the chain is going, but by then the enemy has already breached the castle walls.