Wave 1: Build Auras + Traps + Buff Beams.
Wave 2: Build Minions + Physical and Reflection Beams. Use a Jester with 0 Tower Range to move all traps closer to crystals.
Last waves: Use 2 Jesters rolling 3 swords on Wheel O' Fortuna to kill the Giant Wyverns.
Boss fight: Physical Beam will tank all of the boss's arrows, so just sit behind it and keep attacking the boss. The easiest way to do it without using towers to kill the boss is by using this combination of characters:
1) Jester DPS equipped with a Genie
2) Hero Booster Monk equipped with a Propeller Cat
3) Jester equipped with an Imp pet
- Keep dropping mana for your Monk with your Jester DPS. Your Hero Boost won't go off and the Imp pet won't let the Physical Beam be destroyed.
- Remember to keep using your Wheel O' Fortuna to kill Giant Wyverns (3 swords) or to repair your towers if needed (3 potions).