Thank you for your feedback! Yes the health bar should decrease. We know, the hit feedback is missing, so you never know if you hit him or the scaffoldings. Maybe it helps you to know, that unlike the bosses rockets, the players bullets are stopped by the surroundings. The jumping does feel delayed because it is on release. The longer you press, the higher you can jump. Maybe this can help you if you want to try it again :) Thank you so much for playing!