The controls were a little unresponsive, but that issue plagues all snake-type games.
I really enjoyed, after a few levels in, the moment when I realized that bosses could take up to 8 hits at once if you circle around them with enough bombs. Took it from a nearly impossible game back to just a difficult one. By the last stage, I felt competent. That satisfying kind of progression is rare, especially in short games. Great job!