Wow this is Awesome! Lots of fun, I played it over and over! I didn't have any music though :(
A couple thoughts - The controls feel fantastic, love the dash! I wish the sword was much more responsive. It would be nice to have an indication of when you've completed the level and show where the exit is, perhaps with a new weapon pickup as the reward for beating a level (was as a bit strange having all the weapons from the beginning even though they only damage specific enemy types that aren't introduced until later). Also the grenade explosion melted my eyeballs out of my skull, hahaha.
All-around fun game, great work!!