I really liked your idea for the weapons; it fits well with the theme of the jam. The VFX also looks great. The splash art during champion select is really really cool!!!
On the other hand, with a couple more additions, combat would feel much better. An animation to give feedback that the enemy is attacking would be appreciated. Also, some mobility ability, like a mini-dash or sprint, with a cooldown. The first enemy also appears too close to the player; maybe I'd give it a little more space. This is all constructive feedback.
You guys have made a great entry, congratulations!