Build all besides ogre minion and hint 3 warden towers during first build phase. Can swap ogre and hermit golem if wanted but I've found healing my warden towers on hint 1 to be more helpful and consistent. You may take a hit or two on the middle crystal near the hint 3 towers before getting up warden towers - that is normal.

Have 1 DU left, can place a reflect beam on hint 2 to prevent damage from djinns during waves if needed. Once hint 2 is upgraded I wasn't taking any djinn damage.

Hint 1 : First warden tower stack, one cloud facing towards crystal and the other at the spawn on the floor.

Hint 2 : Second warden tower stack. Make sure to place the 3DU physical beam in order to block the desert cupid's attacks and make sure you can tower + hero boost during boss.

Hint 3 : Third warden tower stack. On top of the building, on the railing. To get up here take the genie lamp at the base of the building. The two clouds are facing wyvern spawns to speed up round time.

Boss wave : Brought in two apps with no guardians but running an app guard and huntress guard would probably be best. Brought dps app and tower boost monk to hint 3 for boss. Use tower and hero boost for the boss firing at the boss with the monk. Kill boss with app and pray for a good staff :)