It's truly eye opening how easy this is compared to ruthless. Still Tier 1, so may be worth it.
Party: 1 TB Monk, 3 summoners with guardian pets (huntress/monk) all on central stack. The auras can be refreshed by moving the monk slightly during wave. Nothing really gets close though, so pretty easy. Decent numebrs of mobs, like 6K in the 30s.
Might be worth doing a traditional Survival build with summoners only. I tried, it wasn't.