Thank you for the feedback!
Sorry that the game couldn't run as well on your machine. I've got a few ideas on how to make the game performance run better, so I'll try and make sure that you're able to play later updates of the game.
Very happy to read that you liked the reload animation I made for the gun. We thought the idea of giving the player dice based weapons too would be cool and landed on a dice revolver for the Jam.
I agree with you that combat can be broken with the amazing skill of running around in a circle and we do plan on fixing that through the addition of different enemies, that will force you to react differently. We plan on making other dice based enemies like a d8 that patrols around the outside of the map and shoots electricity at the player when they get too close or a d4 that find a random spot in the level and then hides half it's model in the floor and acts like a mine to the player.
The additional effects for firing the weapon and bullet impact are areas we can improve on and I'm glad you pointed that out. I did add a monster sound for when they're hit but I can see that adding a bullet impact sound as well as creating some particle systems for both firing the weapon and when the bullet impacts a monster would increase the game's look and feel.