This build brought the kills/minute up from 430 to 558, much improved.

There is a lul before the surge, good time to refresh TB (around 1K kills), if you can keep TB up the whole way that's best, but you don't want it to fall off during surge time, just makes it take much longer.  We decided to point lots of stuff at the South West to catch those copters, worked pretty good.  The East copters seem to be handled fine by the cloud there.

Party: 1 TB monk, 3 summoners with monk/huntress pets

We need TB at hint 5 (firing East or South) to boost all the stuff at hint 1 and all the stuff up north near hint 4.

Hint 4: 1 summoner here

Hint 3 is our only pain point...massive goblin copter rush at the end of waves, causes big slow down on overall time, if we can get them dropped sooner we can speed this up a lot.  This build drops them pretty fast.  Wave 34 and 35 have more numbers, and the last things to spawn are mini ogres, so not as bad as previous waves.