Waves suffer from low-ish mob count, but there is some great end-of-map rewards, so this could be a good contender. Tried SAM towers (cause the long approach from the South is perfect for them), but the pillars on this map tended to block SAMs from hitting very well.
Party: 1 TB Monk, 3 summoners with guardian pets (monk/huntress) Note: make sure to position the summoners so they are boosting all the auras.
TB Monk only needed to get refreshed on the last 3 waves, the rest of the time, he could keep up all the way.