I enjoy playing all 3 classes and prefer my Hunter; however, when I switch to my Titan, the kills in Crucible come easier. Shoulder charge + fist of havoc = easy mode. I play a lot of Control and always enjoyed a "run and gun" aggressive style in FPSers. The Titan class works well with my playstyle. Try different grenades to see what you prefer. Use lighting grenades on walls so they arc horizontally. Save your super when an enemy team begins to take a control node or when their heavy ammo is about to spawn and use Fist of Havoc.