I've been searching for a good Pure Strategy Map since the latest changes, and this is solid.

PROS:  It's Omenak, the GOAT! what's not to like! Best gear, lots of chests to grab.  I could see this being the Pure Strat Meta at some point

CONS: Craashes...sorry Omneak; but I hear if you run it 64 bit on launch it never crashes. 

Party: 1 Tower Boost Monk, 2 Summoners with guardian pets (huntress/monk) or if you want to run 4 Splits, add in another summoner with dual app guardian pets or an EV pet, oddly 4 splits was faster kills, so If you can, run em all.

Hint 1: is where the stack of towers goes

Hint 2: Optional, if needed, minion walls keep the mobs off the towers, each wall is like 1 of each type minion from wall to wall.

Waves after 30 start to get a little tougher, make sure your Tower Boost is reset right around 4500-5000 mobs, so you can run it full into the end-of-wave burst.

This build is for Nightmare difficulty, which has 7-8K mobs per wave, so with the Pure Strategy 100% armor drop modifier, works out very good.