I was not sure how to play this game at first and that make it so I didn't want to keep playing. There is no UI or instructions or a sense of what to do. Also I am unsure if a 2 player game can be thought of a 1 button game but I don't really know.
I wish there was a lot more feedback in general. The monster on the back just going just left and right doesn't really make for good gameplay and after one go I was good and didn't wanted to play more.