I've played a few hours on multiplayer now and have got to grips with the game a lot more... I'm still not fluid enough with my movement but I've a strong foundation from my other FPS experiences so I can still kick plenty of ass.
I've been maining Northstar mostly, just because she's supposed to be one of the "harder" Titans to use. I unlocked Tone last night though and gave her a go... bloody hell, I felt so overpowered, what a beast of a Titan!
This game is just so much fun! Easily one of the best FPS I've played!