This build makes the map and bosses pretty easy even with 4 players though youll still want to hero dps the bosses down. Stats listed are my stats that i used for this but you can probably get away with 5-6k and have it work out(not tested).
Arrows for cloud orientation
Wave 1: build the auras, buff beams, and golems then hop onto and upgarder to max as much as possible
Wave 2: build the warden defenses then use an upgrader until everything is maxxed or you get to the boss wave
Boss Wave: Bring in tower boost and have him stand on hint 1, dps monk, then 2 other heroes for whatever weapons you want to drop with a cat on one of the heroes(not necessary but will make it faster)