Honestly, this game is really chaotic and I really like it for that. The gimmick of moving faster as you move more makes things feel really intense and fun. I also like the attack the player has: it's unique but at the same time can seem quite powerful knowing they can hurt so many enemies with just one barrier.
I think what would make this game even better is to give more indication that you are damaging enemies and by how much. Maybe you can make the enemies take knockback damage and have a pop-up above them showing how much damage you dealt. It helps make your attacks feel more impactful and makes players feel as if they are in fact dealing damage.
Overall, this was a chaotic but fun game to play. Now if only I had the skill to reach 90 seconds haha...