Build golem on the small rock beside the stairs NE of the forge
Place pylon slightly north of the stack if you don't want it eating a monk guardian boost
Hint 3: Hunt/Monk guardian summoner here to buff aura range
Hint 4: TB location on railing; might require 8k TB to hit stack
Hint 5: Aim here to have TB up entire wave. Slightly up and to the right of the light source seems to work the best for me
All waves:
App builder + 2 Monk/Huntress guardian pet summoners + TB
Sometimes a small mob will get stuck near south spawn: mana bomb on app builder when needed.