Mabye map packs
i think halo 2 multyplayer
No, in Halo 2 you can not unlock armor.
yes you can well in multiplayer anyway
no
you find them,look for videos on Youtube I believe that you have to find them in different levels and speaking of halo 3 do you know if you can make scarabs in forge in any places?
Unlock what head?
You can't, its an Xbox 360 exclusive.
not really sure but it might be to unlock guns
you hav 2 complete the game
There is two ways to get it #1 unlock all of the armor #2 is to become the highest rank in halo reach
they unlock halo timelines
get all the skulls easily u can you tube it also u can play multiplayer online to unlock items getting halo ODST u can unlock recon by doing the vidmaster challenges in halo odst and halo 3