Perhaps just more feedback to the player, but that has already been said, perhaps a bit hard for streamers to compete in or hard to find the theme in there otherwise great execution!

The feels of the gameplay are pretty good but it miss some some feedbacks like animations when you use your sword or hitflash. Even so, the graphics and the music are very cool and I specially like the effect on the borders of the screen, it's very nice ! The only thing I don't understand is the link with the jam's theme but it's still a cool entry so well done guys !

The game itself is great and the music engaging, but it's missing a few things: feedback, animations, different enemies. 

It gets a bit boring because there isn't much to do except hold down the left mouse button and kill blocks over and over again.

Maybe more enemies, more weapons, some reasons to move your character and dodge enemies with the jump.

The game is interesting.  But I suggest giving the player more feedback that the weapon is actually being used.

The sfx only play when you're near the enemy.

The jump is too small and feels insignificant, and the sword is too small and can only be used when too close to the enemy.

I'd say maybe get a bigger sword and maybe add a small swing animation to give more feedback also always play the swinging SFX.

Nice work tho.