You just gotta learn how to use the Titan, but it could also be that the titan's play style just isn't your style so try out the others. I'm usually at the top of the scoreboards in matches with a pretty ok KD for the most part. Now with the titan, I'm not one of those -blam!- that just run around with shotguns or fusion rifles all the damn time, or hide around corners with them. I'm usually running around with a hand cannon believe it or not, it's called a little voice & it's just an amazing weapon, usually 2 to 3 shot people at most. My secondary is usually a fusion rifle for when I'm facing multiple people at one time & if everyone is being a camping or marathon shotgun fag, & my heavy weapon is the machine gun. I'm not saying to always look for heavy ammo, but whenever the opportunity strikes just take the bastard & don't let anyone else have it lol, machine guns are great for decimating everyone, It's usually what gets me on top of the scoreboards usually. So I'd recommend them if your a titan since you're not all that fast anyways (unless you use the speed & armor/ recovery codexes I guess). But I usually dull out speed & go for armor & recovery. Now as for the Ward of Dawn, it can be taken out by nova bomb, the strikers super & the hunters blade dance. It does NOT get taken out by rocket launchers, I know that for a fact because I've put it up SPECIFICALLY to avoid getting wrecked by them, 9/10 times they waste their ammo or end up killing themselves because they were too close to the explosion lol, if they survive though they usually come in the bubble thinking they can kill me, then guess what? I get a void shield on top of the damage resist the ward already gives me & I can use my weapons fast as shit. Also if people are just keeping away from the bubble like the smart people they are, just toss a grenade towards em & a few shots & they're deader than dead. Or you can have a shotgun/ fusion rifle I guess & let people come in, but I personally enjoy pummeling everyone who enters lol. It's great for 1v however many people decide to step in the ward, for example I placed a ward in the middle of a huge ass battle during a rumble & I literally killed everyone twice before the ward went down, so many beat downs you wouldn't believe it lol. I know this was a LONG ass post, but I hope some of you decide to try out the defender subclass since I don't see too many lol. But I hope to see more defenders out there!