It wasn’t hard, and it was somewhat repetitive. And the waggle-to-fight controls ruined my wrists. And there weren’t many types of zombie. And it felt a lot like the fighting bits of No More Heroes, and only those bits.
But! It was fun. Somehow. I’m sure it wasn’t entirely down to the main character’s skimpy bikini, feather boa and cowboy hat ensemble. Certainly worth the ten quid I paid for it, anyway. I might even return and complete it with one of the other characters too. You never know.