I got mine playing Titan mode on Shubia Tabia (okay, I admit I do not pay attention to how the map name are spelled.) PAC as an engineer most of the time.
First thing, grab a transport and fly to silo 5 (closest to EU) get there after EU captured the silo and have left. Dump the transport (make sure you no one else is in the transport first; that is just rude) and pod to the AA gun. Usually, the titan guns are not expected to come under attack in the first 90 seconds, so you can usually smash all 4 titan guns.
Now go on a capture spree. I was a squad leader and asked the commander to bring the Titan in close (like he wasn't going to). As an engineer, I need those titan guns to get shot out so I can fix them.
An EU recon slipped into our back area and blew the commanders assets, so off I go to repair them [3 points]. By now, our titan has slipped passed silo 4, the EU have captured 4 and someone is using my techique of early smashing of the titn guns, so I suicide and respawn on the titan! Ever since DICE fixed the ammo crate at the consoles bug, there is no better way to point farm than engineers repairing titan guns under attack. Best of all, you are acting in the intrests of the team keeping the guns going, so it is not padding. So, fix the guns as much as you can. make sure there is a gunner in the seat if you are bringing them past barely running.
Spend some time on the titan guns. Each kill you get adds a teampoint for titan defense, and anyone else gets a kill on the titan guns, you get a half point just for showing up.
Okay, by now the EU titan should be past silo 2, so get your butt there to the next AA gun and smash more titan guns. First grab the APC and put it near the Titan, then pod back to the silo to use the AA gun. They are expecting it now, so just keep using it until a titan gun kills you. THen respawn (engineer!) at the APC, pod up near the titan, but land in some random spot. Use up your missles or pilum taking out more titan guns until you are maxed out. 2 titan destructor pins, in case you have not figured it out yet.
As the titans get close, the shields come down. Back to reparing your titan guns. Usually there are 3 or 4 people on the guns, so feel free to repair them up to 100%. at this point, your best friend is that EU guy on the AA gun in silo 1 that keeps pounding the titan gun you are repairing. If all the guns are healed up, grab the titan AA gun, and sweep for incoming transports. You still get all those kill assists from the other guns. Plus, if you see any EU camping on top of the titan, go pod up to the roof and take them with your SMG. Yes, you will die a lot. BUt you can keep getting them.
This is the strategy I used. Luckily I had a good titan defense team, and we kept 3 silos at all times. The game lasted 45 minutes, and I ended up with my ribbon, 33 kills and 71 team points.