The effects are really great, I love the camera shake and slow-motion! Gameplay is quite fun as well! Some things to consider: I feel it's more intuitive to attack with Left Click and dash with Right Click since I tend to use attack more while playing, but maybe it's just a preference. I also encountered a bug where at the beginning of floor 2, I dashed behind me and glitched outside the level lol, not a big issue but kinda funny it happened. And maybe this isn't too necessary, but an actual health-bar or something similar could help players know how much HP they have left. The red blood effect works well, but it's difficult to know how close I am to dying without first doing some trial and error to figure out how weak I actually am. I also didn't realize I could parry enemy attacks, but once I figured that out, I could easily spam attack and carefully defeat all the enemies which kind of trivialized the game? Maybe you could introduce new abilities or other enemy types to add more depth to the gameplay in a post-jam version, but there's a lot of amazing components here that all feel cohesive.
Really great job on your submission!