I am playing as the Zerg. For story-related reasons (Read: Because the map-makers were sadists), I do not have access to Mutalisks,Guardians, Scourges, or Devourers in the mission. I do, however, have access to Queens and all of the other units that the Zerg have.
Unit stats are the same as in Brood War.
The objective is to destroy a large Protoss base. The base is located on a giant plateau with ramps leading up to it. The ramps are each guarded with four Photon Cannons. All buildings must be destroyed.
I have control over the other resource sites on the map and have a large cache of resources.
The Protoss base has a mineral patch and some Vespene geysers. However, these patches and geysers have more resources than the rest of the map combined.
The Protoss have access to every Protoss unit except the Dark Templar and Dark Archon.
Now, here is my problem: The Protoss AI on this map has a great abundance of Reavers, Archons, and a decent amount of Arbiters. They also employ Carriers and Scouts. I have tried several times to destroy the base, but to no avail. My plan of attack was to send an Overlord and a 200-supply army or two of Ultralisks and Hydralisks, but they got killed off without me being able to finish destroying the base. The combination of Reaver/Archon/Arbiter seems to be very good at decimating my forces.
So, what is your advice for beating this map? How should I go about cracking this base?
Image: The map of the Mission.