Thank you for the solid feedback!
I didn't get a chance to fully implement the story. The first level was entirely cut (wasn't fully finished) which would have explained how the story elements came into play.
The screen shake is a hard one to get figured out. I think maybe I should add an option to adjust the screen shake. I actually tested with a few people and 1 out of the 10 people who tried it got the same feeling as you. So definitely something to look into!
And the bosses are definitely needed to be improved. The knockback code was incorrect, and there movement wasn't optimized lol
But thank you again for taking time to review the game! It's always great to see feedback I can act upon.