I'm playing with 3 summoner, one with monk + huntress guardian,another with huntress and app guardian and the last one with imp and djinlet to be 100% safe and farm afk.
Orcs are behind archer and so not on the buff beam
Hint 1 -> if you don't have a 8k range aura builder you can place a strength drain + ensnare aura on those sides and delete or one LT or the darkness traps
Hint 2 This is the how these 2x 2du reflections beam are placed (this way ogres poison balls are 99% less annoying!)
+ -> you don't really need to stack that much archer minion but it feel safier