It's fine, but there are some major bugs here. Sometimes when I press to attack, the bird doesn't move at all. Sometimes he hurts enemies, and some times he instantly dies to them (even at three hearts!).
I managed to get off the map, and then had to restart the game because nothing was working, and I couldn't beat the frog. Or damage him. Yea, this game needs some bug fixing...
The mouse is allowed, I think, because it doesn't affect the gameplay. So you're fine there.
The idea is nice, but these bugs just make the game unplayable for me. Sorry...