termites outside ss great hall->fast killed->event items->rangers can do it^^
EDIT: HM obviously
This is what i was going to say. You only need two skills really. Whirling Defense, and Mark of Pain. Since whirling triggers MoP they drop in seconds. Just gotta aggro them all into a ball behind that rock, cast MoP, go in with whirling defense and shit blows up. It's really fast, killing that one group of 7-9 bugs takes about 30 seconds total.
cool thanks for all the help guys, Will try the termite one. I tried the raptor farm several times but not with too much success. I saw a few varients of the raptor farm build. which ones works most efficiently?