If you stay and stick to the LEFT wall and jump at the correct time when the penguin charges each time, you will land near enough to the door where you can just enter, and this also (from my research) will speed up the boss fight by a couple seconds.

https://drive.google.com/file/d/1-tSBVHk3eUD9vl2CmrjQ0ggJnEhRJ4nV/view

Here is me doing it. Its a really bad attempt, but the example DEFINITELY shows

It would be interesting to see a comparison video, I don't think it's faster

I'm not confident this is faster at all. His revving up animation takes so much longer than the charge across the room, and even if you did this, he's still covering the distance of the room by going halfway across then halfway back.

if you take damage off of the penguin he cancels his turn animation and faces you immediately. You could use that to make this 2x faster. maybe. idk. Im just a newbie

nah it's about 1.5 seconds slower I tested