There are several types of missions that require "farming" in patrol. The various enemies should react to this. Edit: this could be triggered by just farming mobs period in patrol. For example: Collect docking caps from Dregs. After 10-12 Dregs are killed (you'll have to decrease the docking cap drop rate) the next ship/cave drops a Reaver Dreg 2 levels above the Dregs that are killed. Upon the death of this Reaver Dreg the group becomes marked. The next fallen skiff will drop a Reaver Vandal and a captain and a Pike patrol will scour the area looking for the players. The longer the players stay the more difficult it becomes. The increasing difficulty resets upon death of any member of the fire team. After the pike patrol and captain are killed several skiffs show up, dropping a servitor, several Reaver Captains and Reaver Vandals of increasing level. If/when this group is killed it triggers a public event like the devil Walker, but now accompanied by an Archon and a number of major mobs and pike patrols, perhaps two Devil Walkers, and these would be more aggressive, move around, and their cannon would fire like the 2013 E3 demo (main cannon targets and fires 1-2 seconds later). Devil Walkers drop a guaranteed engram, rare or legendary. Edit: Much like the other static rewards you are promised a rare, but have a chance at legendary The archon has a guaranteed loot table of 2 drops, rare or legendary engrams, a cryptarch reward, and the satisfaction. Edit: Cryptarch reward = those things that give you 200 glimmer Thoughts?