This build isn't mine, it's from wat's video, I just wanted to put it here for a faster lookup: https://www.youtube.com/watch?v=dGLPJrBZOL0
First wave: set everything except for minions
Second wave: summon all your minions and upgrade stuff
Hint 1: double spider + mage and 4 archers, 5DU buff beam
Hint 2: spider + mage and 2 archers, 4 DU buff beam Hint 3: spider + mage and 3 archers, 4 DU buff beam, and a Healing Aura is added for an easier boss fight