Important: Requires the secret to have been found on this map for extra DU

Build Warden towers first, start with the south stack at hint 3 (build on the device with the red nob, to the left of it so it has LoS on the south corridor). Then, build the towers at hint 1 (right by the conveyor on the gray circle). Stand on top of those towers to build on top of the railing above you, make sure the towers there are on top of each other. After that build beams, use the towers next ot the conveyor once again to drag the beam to the top. The Golem is last.

TB on hint 4 (on the machine or right on the platform next to it) in order to boost all tower stacks. Keep Warden on main split and use her boost to speed it up, You can also upgrade on the first wave instead, but from my experience it makes the first wave more inconsistent in terms of time due to more "bad" stuck spots for EVs with lack of dps. Make sure the south beam and perhaps even some towers threre are upgraded fairly quickly if you go the upgrading route since you can get a stray ogre hitting your crystal there sometimes. Use all the EV mana to upgrade towers, you usually won't be able to upgrade in one wave. 

On the last wave, add a summoner below your TB with app and huntress guard, as well as a summoner on the south stack with huntress and monk guardian. Activate warden boost around halfway through the wave this time, on every wave there will be plenty of mana in the forge area to keep it up longer with little effort. But warden boost shouldn't be needed at all costs. 

Another thing is that I recommend standing on the north half of the map with your builder/upper as much as possible, due to aggro of not only orcs, but EVs that spawn upstairs and otherwise run into a beam and get stuck if they try to go around to the south.