Build all EV stuff, shroom pits, auras, and clouds first wave. (I only put the shroom pit on pin 3 with the BB and auras and used the rest on pin 1 and 2.)
Pin 1 is in the corner near boxes with a 2 DU reflect going across.
Pin 3 put the EV wall close to the edge with the golem behind it and the towers behind the golem.
Pin 5 is a semi circle around the towers infront of reflects to stop ogres from wacking them. (Dont put them too close to towers.)
I used 3 summoners with a monk guardian and a huntress guardian pet each. (1 summoner per core.)
During boss sit behind golem and heal the towers if needed. (I also used a TB monk but still had to repair.)
Idk if the towers solo the boss, I didnt try it but GL.