Start at any wave and only upgrade buff beams, auras, and the pylon.
Blue arrows are cloud directions
Minions are optional, you can add more if you need them.
Pin 3 is ontop of the rock.
The pin 3 reflects are the hardest part of this, if done wrong towers will die. You can put one skinny reflect on the back of the build on the rock and the other 2 connect ontop going down to the ground like I have presented.)
Two summoners with 1 huntress and 1 monk guardian each, one sits between 3 and 4 so that the monk guardian boosts auras and towers, and the other summoner just sits at pin 1.
1 TB monk on pin 2, and a wheeler jester sitting at south. (Roll swords at 100 enemies in and again at the last 100 enemies per wave.)