I noticed the tips just posted re wish and traps. The problem I have is trying to get any hits on mel at all - what spells or weapons do you suggest?
I've done 4 battles so far and my party is ok. - of note - when characters die and are brought back to life, they seem to have all spells intact...

Basic combo of Breach and Greater Whirlwind.

Casting Improved Haste on your tanks is a good idea too, if you run out of Greater Whirlwinds.