Last Stand
The Last Stand is the last of the Shakuras Mission.
This mission is a defense style mission, where you must hold the center location for as long as possible.
As you might expect, the best way to do this is with a mass amount of Photon Cannons, Khaydarin Monoliths and Shield Batteries. It will take time to get them, so focus on getting your Probe count as high as you can while slowly working on your defenses.
While defending, you of course will be attacked. Each wave will get slightly stronger, as the amount of Zerg on the planet increase. As you approach 1 million, the waves get much larger, and Hybrid also join in. We suggest that each ramp has 3-4 Cannons, 1-2 Monoliths and 2 Shield Batteries. It's also wise to place Monoliths throughout your base as a secondary form of defense.
Along with the stationary buildings, you should have a mass of Stalkers and Zealots built up and ready to go as the Zerg counter reaches around 500 Million. These units are for base defense, and for completing the main objective, which is to destroy the Zenith Stones. This objective is fairly easy and can be completed at any time, by simply dashing for the objective. The sooner you do it the better, as the more Zerg there are, the harder the building is to reach.
Once 1 Million Zerg has been reached, the mission won't automatically end. In fact, it won't end until all your base units are destroyed, so if you get over 1 Million, don't fret too much about losing your base, as it's supposed to happen.