1. Vehicle Sprint- First off if you want that shiny new ghost, or maybe that even bigger Wraith at the beginning start off with the Sprint Ability. Even though a lot of us know this already, you'll still see a lot of individuals just running normally for the vehicle while the guy/gal with sprint just run right past & get the vehicle zooming off towards the other side of the battle.
2. DMR(or small arms) Shotgun Combo- **Now if you've snagged a shotty before you already know that when people see you coming around the corner with that thing they'll backpedal and quickly shoot your shields down before you even have a chance to get that one hit kill(depending on the distance). Now in small environments it's always good to keep your Shotty out as primary weapon, just for the fact that distance is lacking and you can easily get the kill, but in larger enviroments you can still get this upperhand.
Now with the Dmr (or other) shoot a few shots at your enemey & if you got the upperhand then you can of course finish them, but if they happen to have the upperhand hand and your shield is wanning, just quickly go aroud a corner, switch to your shotty while turning back around and surprise them with a one hit kill.
3. True Ghost- Now the ghost is a scouting vehicle which is built for "speed", so on the battlefield you can easily rack up loads of kills by simply "speeding" around. Though a lot of rookies may go around just shooting people, you can easily get sniped or shot off, as well as the fact that the Ghosts plasma bolts don't take a lot off compared to it's other counterparts. So speed is the key to winning with this vehicle.