Update 03/03/2026 for more safety: The buff beam beam is made to go straight north to south in the middle of the patch of area, rather than at an angle. The buff beam needs to be south enough so it can deal with the spider spawn a little bit northeast of Hint 2, but north enough so that it can see the west lane. So about halfway of the archway. Hint 3 (the end of the buff beam) would end up about as south as the mana chest.
Initial building phase is under 4 minutes, with each wave being somewhere between 2.5 to 3 minutes.
Blue arrows for Cloud Towers. Green arrows for non-Cloud Towers.
Only your upgrader is out during the first wave (Wave 32). The top left doesn't need any upgrades other than getting the buff beam leveled up prior to starting. I upgrade the buff beam to 1 star before starting. The Adept upgrader sits on the Hint 2 stack and aims towards the west spawn.
Place 4 Summoners around the Forest Golem for Wave 33 and onward. There should be double huntress, double monk, double apprentice, and then your choice of guardian pet combo for the last summoner.
Ogres aggro Harbingers, making them stay back. Thanks to @fridge5 for helping me out with that info.