Ice (preferably wintermelons) to slow him down, and spikerocks to distract him (not so great for the roof, but great everywhere else). Jalapenos and cherries are also effective. --- "Why bash Jesus? He's born, you get presents, he dies, you get chocolate"~Wolfenstein2000 "He's like a piņata. Hence all the bashing."~LS06
Snow Peas in the front row to slow them down, then lots of firepower. You'll need 2 bombs to kill him if that's all you use. If you take both the jalapeno and the cherry bomb, you can use those, but then lengthy cooldown will prevent you from using that combo if you get more than one.