This is a variant on AimAssistClearlyDoes' build, minor modifications.
You have a pretty short timer, so gotta move fast. I put up the hermit's golems first round (2 locations) and auras and buff beams and a couple lightning towers. First thing when wave starts, drop mana from your booster or upper to your apprentice to build the rest of the lightning towers and DSTs. Upgrade what you can in the wave. Tower Boost always.
Before second wave starts get the rest of the build up: huntress traps and minion wall on the West side (if you don't want minions, you can use another hermit golem and drop one of the DSTs) and here-and-there spider minions with mage minions on top, just to slow things down as they advance through.
Then stack summoners with guardian pets on the stack and tower boost to victory.
Good Luck!