In this mission you will have to destroy about 75 UFO's. Hop in the turret's (The Huge Guns) and kill them with ease. Once you defeat all of them and charge the Ark you will have to defeat 3 Archon's QUICKLY. If you are playing this on Hardcore it can be a pain. Make sure you are equipped with your Liberator and Opressor weapons. If you are like me and didn't have them when the Archon's show up. Look to the bottom of where you start and to the right. There is a foot locker near some tents, But make it quick the Archon's don't waste anytime. You will need to Fly near an Archon and Hover over them and shoot the 4 Red Braces then drop down in front of them and Hit
to initiate the Kill Sequence. Kill all 3 before the Ark's health is depleted and this mission is a success.