I generally only use my Titan, in both Crucible and PvE. He's the only character that I've had since Day One, and he has close to 40 days of total play time on him on the website/app. I have to say, that I don't think Titan's are the weakest Crucible class - I feel like they're the hardest to play, because they don't have as many "Cheeses/Crutches" as the other two classes. Fist of Havoc, I consider, to be one of the best supers in the game. It's an amazing Shut-down super for other supers, it's capable of killing enemies way beyond it's initial explosion radius (See; Shockwave) - and with Unstoppable on, you can survive a Golden Gun shot, three Blade slashes, Sticky Grenades, Rockets, Shotguns etc. (Even Bladedancer's can't survive a full shotgun blast to the face.) Lightning Grenade - Arguably the best grenade in the game, and maaaaany agree. It's got a ridiculous cone, deals up to 126 damage per pulse, and can pulse up to 5 times with the 'Aftershocks' perk. With Armamentarium, two Lightning Grenades in Control can clear a zone, and even zone off passages enemies may take. Shoulder Charge should get some bonus armour while they are running. I personally have never ran with Shoulder Charge because of how easy it is to kill a Titan while he's just running in a straight line at you. As for Defender... well - for the most part this class isn't supposed to be used for PvP. It's a very PvE-Orientated ability, it's a support class. I have a feeling that the Hunter's new Void subclass will be similar to the Defender, I do - infact - think that Blades & Guns will be more viable in PvP than the Bow. EDIT: Catapult. This 'Lift' ability is actually faster/more mobile than Blink is in Crucible, if you burst-fire it. Triple tap the A (or X) button when you're about to use it, and each separate burst you fire will give you added momentum, causing you to move incredibly fast.