Not bad, I do love hitting people
Its always fun wacking people on the head, but make it more enjoyable. My advice:
1. Make it look and sound like more of an impact. It's more satisfying that way.
2. It should be more complex: at least make him move a little faster the more hits you get.
3. You should record some funny voice-overs and/or sound effects to play each time he's hit.