halo 4 secret waypoint codes

I searched here for any threads on this and came up with nothing. I just used these codes last night and they still work. Some of them have pre requisites, some don't . They are found here


Enjoy.

Edit: sorry forgot to mention that it might be a spoiler, so spoiler alert.

Make sure you click on the show more button for more code links. I think I got over 35,000 xp free. If you guys know of any more post them here.