first of all try to desanctify the golem. This means that you should change the terrain the golem is standing on to the weakness of the golem. Then, sanctify your characters. Kyril should be good for killing the golem when he's sanctified and the golem's desanctified. Use the swallow cut a couple of times and the golem should be gone. And for the nasty flying punch. The best thing to do is tank it with one character only. To do that, use the firefly orb. Make sure he's sanctified and has high def. Also, if you have Yu, it would be good to use him.

Cheat Codes and use GameShark /gg