Just spawn kill. 2 right 2 center & 2 left. 1 on right can spawn kill cave enemies while second on right can spawn kill enemies that spawn in center/back doorway (on left side). Left side can do same 1 focus on doorway at far back left side & other has center/back doorway on right side. 2 in center need to be able to control stairs & back-up sides just in case someone goes down. Atheon epilogue & light/beware are very good at taking down enemies. Sunsingers are great for revives & gunslingers with 4 shots can generate a lot of orbs. Also when legions are summoned dont waste ammo just jump to the outside pillars.