Getting about 500 kills/min, was hoping for better. 7 Chests. Pets aren't great, TB needs refresh once per wave. Run around and repair traps between waves. Gas traps don't need to be on the buff beam. Be careful they aren't holding mobs back from getting hit.
Goal on the South East and South West arms is a mob walks through webwall (2x dmg), get oiled (2x dmg from fire), starts burning and gets gas trapped while burning
Party: 1 TB Monk, 2 summoners with huntress/monk pets @ hint 1, 1 Other, maybe 2nd TB monk depending on if TB falls off.