Added golem to Hiekka's build as my towers were taking some damage from ogres and golem allows them to heal mid wave without me having to pay attention.
Start wave 22.
Upgrade buff beam pre wave and use monk guardian to extend auras to beam on first wave.
Stats are what I had at the time but should be able to do with lower.
I use upgrader and monk guardian summoner wave 1, then switch to 2 summoners for the rest. I pull 4 summoners for final wave for map rewards.
After upgraded you can fully afk just flash heal from towers before starting next wave for aura hp.