This cooks, but it is an active build, so you gotta be present (or at least check in between waves and repair)
Basic premise is to strip resistences, then inferno trap and web wall every spawn, some we catch with auras others with darkness traps. Then we have 2 locations that are used to cap the incoming Djinn/Copters, which get boosted by our summoners. You'll want a decent trapper for this.
We did work in one oil trap up top to help with some of the mechs and ogres up there from getting into the stacka t hint 2. oil should also hit/spill to the bottom and rock those guys as well.
Party: 2 summoners with monk/huntress pets, 1 DPS summoner to upgrade/flash heal (I had on a hero cupid and a spider queen pet)