In Defense of Theatre

Any tips on this quest? I can't seem to take out all four groups at once but if I let any of them go by I end up failing it.

Hmm I remember doing this I think. It's the one with the rushing morganites? If so, rush the first group that comes in(should be the one towards the right), hold at the door once you get them down to like one or two, there will be more that rush from the other door. If you have one or two morganites left, don't worry bout them. Do same thing with that door. And you should be done. MM and sf heroes really help :P

Just beat it. I took out the two groups on the right and luckily the other two groups got stuck just before they killed the prince.