No you are thinking of Halo Reach.
No, this is only a feature for Halo : Reach
No, your game has a glitch.
Yes, there will be Jetpack
muythic map pack. that comes with HALO 3: ODST
jet pack in haloi reach is an armour ability piick one up or spawn with it.
There is no jet pack in GTA 3. So there is no way to get one.
You have to download it over xbox live
cant download halo 3 map pack, error message : premium is blocked
It is not like the multiplayer map pack. Halo 3 Recon is a new game that depicts a new campaign as an elite ODST unit during the events of both Halo 2 and 3.
archon armor
Mythic map pack mythic mature pack
The Heroic Map Pack for Halo 3 is now free. You can download it via xbox live marketplace.