I didn't dodge any projectile at any point in the game. The projectiles came too fast and the responsiveness of the player wasn't high. Instead I just went as near as I could to the boss and the heart and spammed LMB as fast as I could, which was all that was required. Sound didn't work on firefox which I was on, I went on chrome and the music seemed nice, better than mine atleast lol.
The art was so good I thought it came off some pack smh, its really great.
I would improve:
Player responsiveness so dodging actually can be done (both movement and grappling. You could also lower projectile speed.
Player health? I didn't see a bar.
Sidenote: I got the game completely wrong, you were supposed to swing on the hand thingies to deal damage but I just shot with the yo yo.