I'm trying to think of puzzles and on different ways to murder the bunny for puzzly goodness. In the current incarnation the bunny can be impaled on spikes and burned by fire. If you know your Wario Land you know what fire does to you
Also for other entrants: Know your limits, know the dead line. Don't plan too much or there will be ugly cutting near the end ;)
If only you reached that carrot up there!