you need to acheive different tasks in order to unlock diffferent armor. You also need to get achievements
You have to earn achievements or get skulls.
no just work for the armor
For info on Halo 3 armors, go to the following link: http://www.gamefaqs.com/console/xbox360/code/926632.html
by getting certain armors
By Playing the game hardout. It works.
yes in fact if you do what you need to unlock an armor in co op you unlock that armor for both files or players i tried this and now me and my brother both have same armors for unlocking armors in co op well almost all sometimes i play with out my brother. all armors are unlock able in co op but also if you are playing co op and you find a skull both files or players get the skull. i did not know this till i did what i took to unlock a armor in co op.
Not really, special abilities no, its all for looks
Unlock what head?
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
Unlock it where? It's already in it by default.
You unlock the armor.
yes it can recharge faster than the old mark 4 shield technology also i personaly think halosucks!!!