If your a Raze fan, and you need help, ask me as a comment or here. I've got LOTS of tips. Seriously. I know about good snipe spots, campaign help, what weapons you should use, strategies, and much more. Just ask my friends. (Shouldn't the creator of Raze do this? Yeah, I know. Don't comment about that.)
Snipe Mount. i got a unstoppable combo. 35 kills in a row. ok. here we go. you have to do sniper rifles only. then, got to the place, "stranded." you know where the first aid is, yeah, that's also one of the places where you come back to life. there is a platform above that place. (not outside the ship though.) kneel down, and you'll see a wire in the background. put your mouse on that spot. every time someone dies and goes there, shoot. you'll kill them instantly if you do easiest. (it's a good way to earn BOOM! headshot the trophy.) find as many rifles as you can at first, so you don't have to look for them while your getting your giganto combo.
These are the ones i like in order 1. Grenade Launcher 2. Sniper Rifle 3. Rocket Launcher 4. Railgun 5. Shotgun 6. Chaingun 7. Zapper 8. Uzi 9. Assault Rifle 10. Magnum