Shingen-E and a good shotgun that has range. Click on a rocket and your good to go. Run around with your shotgun and whenever you see someone on your radar, slide shoot and hit in one go and you'll kill them every time. Make sure to aim though. The AR can be used for any other situation except LONG range sniping. You'd have to be stupid to attempt that. Go sniper ONLY on the moon stage. The sight lines are insane. I remember getting spawn snipped. Pick a class and role with it. I can use both. Each has a slightly different strategy. With striker you can be pretty aggressive, especially if you have your super charged. With Ward of Dawn or whatever, you'll need to kind of hang back on the points. Pick one and patrol the area around it. Killing everyone. If they try and rush your spot throw down the shield and pull out the shotty. They can't mess with you now. If they are close enough for a one shot kill. Run, slide out of the bubble, pull the trigger then turn tail back to the bubble. It's your safe haven. Plus it helps the team out SO much. It's honestly just playing to the strengths of the Titan. Which is more health and better melee. Use it. :)