This was pretty cool, I like the turn and grid-based combat idea mixed in with possible co-op play. It was also neat trying to see how all the characters played. The only one that ended up netting me a win was the wizard and thats because luckily the AI all decided to kill each other.
Some of the mechanics and controls were obscured, like having to move into a character to attack them, and I'm still not exactly sure what determines how many times I can use a special attack.
The sounds being made with what seemed to be just your mouth I think was kinda charming in a way, worked with the artstyle.
Also I think the view window should have some better scaling because unless you make the game fullscreen the sides get cut off.
Overall, good work!