OK. First you pick your map. Then you pick a gametype: CTF, conflict, basic battle, and what ever else 343i comes up with.
Now you pick how many AI on each team, Diff, settings, and what teams can play. (all may play if you wish)
AI: 200, 250, 300, 350, 400, 500, unlimted
Then you start the game. Pick your team.
Covenant
UNSC
Flood
Forerunner constructed robots
( Vehicles for UNSC and Covenant, FCR and Flood have special things like…
Flood: spores
FCR: Enforcers
Now, pick you class.
Each class has ups and downs, each with different weapons equiped. You must have points to get higher ranked classes. You get points by playing as low classes. eg, grunt
All classes will be from Halo uni, eg grunts, jackles, combat forms, etc
Now its all up to 343i for the rest 