To mod/hack/glitch in private games you need to disable anticheat. Press home button when in pregame lobby or start the game and hit home button and disable anticheat. Mod/Hack/glitch away.
halo 2 project cartographer has a portable option, open halo2config.ini in app data, set portable to true, or 1? save, open the game and then close it, should be portable. may need d3d dll in the folder idk honestly. havent tried it.
You use latest GFWL client.
Then install game use the live access code provided from any gfwl game from 2007-2010, give or take. Then sign in with your Xbox account. It'll ask for the key, it'll take 30 minutes first time to log in. Log in, update the game, play the game. If it's asking to...
Join the discord for further assistance for emails and activating accounts and any other issues
https://discord.com/invite/halo2
DigitalDog :
Add “admin@cartographer.online” to your safe sender list in outlook https://outlook.live.com/mail/0/options/mail/junkEmail