I usually use ranged weapons on the party members that I want to keep away from the combat area, and they usually will pick a target and stay on him until termination. I use my stong fighters up close and personal with the biggest one of them all, and have one ranged weapon spearing him from the rear at a distance. The other ranged weapons look for those weaker, but still annoying little baddies. That usually wipes out the screen of all the debris, so I can consentrate on the other bigger problems.
(It is also a good way to get a fighter out of harms way, if he is dying, yet keep him in the battle)
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Larry, a
Loyal Guardian of the OHF