I like the implementation of the limitation on paper but in practice there wasn't much reason for me to charge it up as the damage and piercing didn't change, at least to my knowledge. Only mattered in niche places for timing relative to the aiming position. Also I didn't really notice any difference in enemies as they all died the same way to my spam clicking Dx
But it was fun! And the animations had a lot of character/personality, almost reminded me of undertale for some reason lol. The way you animated the boss death was cool. Good job, very interesting idea