Update 03/03/2026: Build is AFK-able. Removed unneeded reflect beams. Replaced an Angry Blossom with a Sludge Launcher. 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.
Blue arrows for Cloud Towers. Green arrows for the Angry Blossom and Sludge Launcher.
The Nature Pylon is in a spot so that it buffs the two aura stacks while also buffing the Hint 2 and 3.
Tower Booster sits on Hint 2 while shooting at the west spawn.
Double huntress guardian summoner is at Hint 3.
If you use 4 characters (such as on Wave 35), take out a double apprentice summoner and an apprentice/huntress summoner. Double apprentice goes to Hint 3. Apprentice/huntress goes to Hint 1 if your stats aren't high enough. I haven't tested if the apprentice/huntress at Hint 1 is needed or not. If a summoner is not needed at Hint 1, then place a squire/huntress summoner at Hint 3 instead.
For AFKing, you can replace the TB with anybody else, but I'd recommend having the TB to start the wave before you walk away or tab to something else. This will ensure the harbingers definitely die without reaching you when they spawn during the early phase of the wave. TB doesn't need to be activated again.
If you gold wheel, equip your wheeler with a huntress guardian and have it at Hint 1. Make sure you have Tower Boost whenever you wheel the Djinn/Sharken rush.