Neat concept, and it feels great when everything falls into place. The mages spent most of the time hiding under walls so I had to kind of guess where they were - that was more tedious than challenging imo.
I wouldn't have minded some popcorn opponents with relatively low health pools. Bouncing off a chicken after you get a full map grapple off kinda kills some of the momentum of play. I'd either increase the movespeed of the player (and have a separate lower movespeed for when they're grappling and trying to swing to either side) or get rid of non-grapple movement entirely.
As it is right now it's unclear from the get-go how the game wants you to move around and if you buy into the grapple-to-get-around instead of just attack, the current movement doesn't serve much purpose.
I hope some of that was helpful. I enjoyed my time with it and wouldn't mind seeing a more realized version of the game in the future.