Place auras, buff beams, and refect beams 1st round
bring summoner with a monk guardian to buff auras
round 2 place apprentice towers and up beam with tower boost monk
round 3 place minions and i switch to upper after this to up towers
for boss keep towerboost monk, hero boost monk and your buff summoner under bridge.
i use a summoner with full resistance and eye pets on top of the bridge to aggro and dps boss, boss fight pretty much afk. make sure to keep your tb on and hb as much as you can with one tank if mana
#1 requires tower stacking. towers are beside the bridge close to the bridge
#2 make sure minions are far enough away from the cores so the flames from mechs don't destroy the core