Thanks for the feedbacks. I did tried it myself (I'm primarily the artist behind the game), and I definitely noticed lagging as the game progressed and the enemy does become too aggressive (and the hitbox for attacking up and down is finnicky).
It is possible to beat the game without dying. Since it is a game jam, I allowed for the option to revive. After testing it numerous times, I forget about the vanilla difficulty experience, next time won't be so bad!
