Congratulations, guys! The idea is fantastic and very well executed. I personally love both rhythm games and parry mechanics, so this was right up my alley.
At first, I had a bit of trouble recognizing the rhythmic pattern between the gameplay and the music, but once it clicked, it became really fun to play!
If I had one suggestion, it would be to make the parry timing window slightly more forgiving for first-time or casual players. That said, since this was made for a game jam, it's a very minor point.
The art style and sound design were both excellent. Great job, everyone!