This is a pretty neat concept for a game jam. Hitting the directions to react to incoming arrows has a lot of potential for this agile swordsperson fantasy using relatively straightforward mechanics.
I do find myself wishing this game played more like a rythm game though, rather than brief bullet-time periods where you have to press the right keys and hit space before a timer in the background runs out. Displaying WASD instead of something more intuitive like arrows and being to mash the keys with more arrows on the screen due to the lack of enforcing order or timing ends up creating a bit of a clunky gameloop and limits the experience for me.
With that being said the assets, music, and simplistic aesthetic are really effective... the atmosphere comes together really nicely!