Contact Microsoft or 343 industries or bungie depending on the map pack you may have not downloaded it all and your Xbox could have turned off if so go to download history and download again
No, your game has a glitch.
it is downloadable content for the game and can be purchased on xbox live
No you are thinking of Halo Reach.
Go check it in the Market Place in the Game itself
No, this is only a feature for Halo : Reach
No because they have made new maps and it's an entire new game, also it's before the first halo we have ever played.
Kinda, you get Halo Reach, but you are limited to playing the Anniversary Map Pack. All game modes are on except Campaign and you only play Maps from the Add On.
jet pack in haloi reach is an armour ability piick one up or spawn with it.
The noble map pack.
You buy the map pack at marketplace or buy halo anniversary
Yes, Halo ODST, Halo REACH,Halo 4, And coming out for Next gen. consoles soon. Is Halo 5 also including a halo pack with all the halo games made by 343 Future Halo games may be released by 343studios.
You can't. Legally, anyway.