Head out into the Mirror of Lyss to collect the four Vabbi Guards and the Vabbi Guard Captain again (from the previous quest). As before, they are very useful in speeding up the killing of the Margonites; just remember to keep some enemies in your aggro range. To complete the quest, simply follow the quest marker to clear out seven groups of Margonites. Compared with the quest that's needed to get this quest, this one is very much simpler.