Exp is not awarded for custom games. This is to keep players from taking advantage of this to set up wins for themselves to improve their win percentages/score. They are good for practice however!
Win a game, or in FFA place third or higher.
You get exp by winning or tying a game of Matchmaking. And you can earn double exp on weekends by playing the weekend double exp playlist
You level up by playing online multiplayer and earning xp (or credits as it is in Reach). Each level as a required amount of xp to level up.
simply by getting acheivments
you have to gain 70 experience points, thus resulting in officer or lieutenant as it's called.
play a ton of matches and win
No all 1000 need to be on halo 3
you need to get 1000+ achievement points from halo 3
Halo 3 gamer points are points that you get from completing a achievements in the game. This points are seen on your xbox live profile and are for bragging rights.
Same exact experience of Halo 3.
i am VERY sorry to inform you of this, but you cant. in halo 3, halo reach, and halo 3: complete multiplayer experience you can.
You get the Halo 3 ODST campaign and Halo 3 multiplayer. Nothing else.
Gamerscore points are given when you unlock achievements
Halo Points is a reward program for buying McFarlane Toys' Halo® 3 action figures and vehicles. Every figure and vehicle comes with a certain number of points which you can save and redeem for free Halo products. Halo Points are located on the figure or vehicle packaging, on the UPC bar code.
Yes
play good