Mint Chicken

I posted this hoping that someone could help me understand what these Loadouts will be like. But a few cool things I do know is that You can use two weapons but they have to be like the magnum, or the BR, or the DMR but you get it. I also know you get armor abilities like Pro Vision, the Hard Light force field, the Thruster Pack, Active Camo, and maybe Hologram. You also get a perk like Drop Shield, or Over Shields or maybe it's invincibility, and last firepower which I think gives you one more weapon to carry. Now one thing I don't know about at all so please help me with it. Can you for your secondary or primary weapon use a power weapon like the Sniper Rifle or Rocket Launcher. Also if you can do yo get it by rank or something else. Thanks for reading my Thread.

Well I think I will use the BR because I had a much better K.D. in Halo 3. Plus I suck with the DMR.