Yes you can. You could just go into forge, spawn in some weapons, and fight to the death as much as you want.
We aren't sure yet.
There WILL NEVER be a Halo 4. Halo 3 is the end of the story. ''Finnish the Fight'' and all that.
Finish the Fight
I would say Halo 3 ODST
yes it does
No, firefight was not introduced until Halo ODST which was made after Halo 3. Only Halo ODST and Reach currently support it. Halo 4 will have a new game type called Spartan Ops which is similar.
Technically No, the installation is destroyed and the only survivors are MC, Cortana and Sgt Johnson Halo 2 brings the fight to earth and Halo 3 wraps things up with peace,,, so Technically no one wins
basiccly no achievements, but it will say you finished the fight
yes of course!
no Gravemind was the leader of the flood and that virus. The elites in halo 3 join the UNSC marines as they fight the covenant and the flood
halo wars, halo reach, halo CE, halo 2, halo 3
Yes Halo ODST's campaign is definatly going to be longer than the one in halo 3, the long campaign was one of bungies main objectives in the making of ODSTAnother answerer:No Halo 3 ODST does not have a longer campaign than Halo 3, it is only an expansion to Halo 3