I dont remember what modifers were on, and im sure they would make a big difference, but when i did it we had 1 person on each activity, one person searching for the eye constantly (he normally spawns behind quadron but he may spawn somewhere else at times, havwnt figured out what spot quite yet) and he was also in charge of the bubbles, best to have a shotgun or icebreaker. When quodron searches stack up and everyone shoot the bubbles. Second member focus' on adds the entire time, whatever weapon setup their most comfortable with. And the last soul is left to dps quodron the whole time. They may be time for the other two guardians to focus on quodron, but this should be your guys focus 95% of the time and you should have some luck. Hope this helps