Getting about 405 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.
Party: 1 TB Monk, 3 summoners with huntress/monk pets (2 at main build, 1 at hint 5 for big traps and flash heals)