Build Description
Huge and confusing map, but pretty easy.
Hint 1: Stack the auras, as always.
Hint 2: Place as many archer minions as you can fit along each of the buff beams. The mages can go behind them, as they're mostly to keep the archers healed. Try to spread them evenly between each of the crystals but honestly you have more than you need anyway.
Hint 3: It's hard to tell on the map, but each fireball tower points down a different corridor and is protected by a trap. Except the ones that are obviously away from the buff beams, all towers/traps/auras/minions should be place on those beams.