First and foremost I'd like to let y'all know that this build was revised from Skully's Build here: https://dundefplanner.com/map.php?load=5025 but this is how I've found it best works when Not Stacking.
---------------------------
I'm Fewd! I stream every weekend and am always willing to help you out. Feel free to check me out or ask questions on Twitch, Steam, or Discord.
Build Start:
Place the Strenngth Drain and Ensare auras on top of the Stairs, as soon as it's flat/ level.
Place the Electric Aura so that it hits the enemies at the North/ Top of the map when they get outside their spawn.
Place a 2 DU Reflect Wall as seen above. This is to block any incoming projectiles from the Northern// Top Spawn.
Place a 4 DU Buff Beam on the Stairs Railing so that there is a slight gap where the beam is not touching the railing. You will want to make sure this is equal/ level on both sides. (Hint: It helps if you just focus on the gap, you can easily see if it's leaning more towards 1 side or the other.)
Place a 5 DU Buff Beam on the Stairs Railing on the railing below the first Buff Beam to where it maxes out at 5 DU across. You will want to make sure this is equal/ level on both sides. (Hint: It helps if you just focus on the gap, you can easily see if it's leaning more towards 1 side or the other.)
Place a Shroom Pit near the top of the Stairs, but not on the railing. (Hint: It sort of looks like it will clip through the railing if placed properly, not on top of the railing.)
Place a Sludge Launcher directly in the middle of the Buff Beam on the railing, facing North/ Top.
Place 4 Cloud Towers, each matching the angles/ arrows in blue. You should be able to get all 4 Clouds and the Sludge Launcher all working with the 4 DU Buff Beam.
Place 2 Wisp Dens on either side of the Stairs below the Clouds on top of the 5 DU Buff Beam.
Enjoy!
Some things to know for the build:
I start Pure Strategy on wave 23.
I use an upgrader to max everything out on the first wave.
For fastest clearing, I use a Tower Booster, a Warden (to enhance Tower Damage) & 2 Summoners that are using Damage & Speed Tower enhancement Pets.