Hint 1. Standard BB savings for survival. Build 2 BB and upgrade them untill the main BB buffs all auras.
Hint 2. Build main BB on the honeycones. 4 Dst's 8 Lt's
Hint 3. Middle isnt an aura stack, only ensare and strength aura.
Hint 4. 3 ogres will block the archway. But Ogres move arround during fighting leaving gaps for mobs to go through. Use the 2 spiders to block the gaps, that way you save alot of faffing about placing the ogres 100% correctly.
Hint 5. Auras must reach this walkway for sufficiant dps on mobs for end waves. If you got dps you can move the auras away from the spawner.