To unlock this achievement you will need to survive an evacuation. When you are on the losing side of a match a drop ship will make an attempt to evacuate you from the battlefield. Make your way to the marker and wait for the drop ship. You will still have to battle the opposing team while you wait. Once the drop ship arrives you will have about 10 seconds to get on board and hope that the opposing team doesn't have enough firepower to shoot down the drop ship. If you make it back to orbit this achievement will be added to your collection.