ODST does'nt have the AR.
Yes
No can only get firefight in halo 3 ODST
no, all there is not any flood in halo 3 odst firefight
You can't only in Halo Reach Firefight.
Yes, you can play firefight in Halo 3 ODST without Xbox live.
you have to beat ODST on legendary alone or with another ODST.
Bungie has already beaten you to it. It is under Firefight Classic
Same as halo + something called Firefight
Yes, Halo 3: ODST will feature offline cooperative Firefight mode.
Dude its on the freaking main menu.
some random odst on campaign on firefight rookie or someone else
no it will not it will have firefight like a halo version of gears of war 2 horde mode