Peeing Brute

On the Ark at the sleeping grunts, after the scarab, look at the resting brute and it looks like he is peeing.

 How to Drive An Air wraith

Bump off the hood of the wraith hold RS and shoot brute inside so you drive it   

            [not working every time]

Running Rampage

On the Ark When the Huge ship comes kill the soldiers and the flying thing will go on a bloody rampage to kill master chief.

Triple Kill Achievment

Score a Triple kill within 4 seconds in Lone Wolves.

Secret Skull

Its on corrtana and when you have to blow up the 3 pods on the first pod you see jump on it but make SURE its on legendary and when your on it quick look for the skull on the pod and jump away when have it

Map Mound

To get map mound tool you have to make your body go out of bounds when dead body in air. When you get the film follow your body and when out of bounds you can find the most rare thing out of bounds.

Blue Egg

On Sandtrap use Map Mound glitch and go to any of the small towers with lights on the top and when looking in the light you can see a Blue Egg but it looks like a dot.

Secret Terminial

On cortanna in the liitle purple room after you fall though the hole find your way under the floor and the big bright object is a terminial.

 Ranking Trick

In Match Making Every Weekend is DOUBLEEXPWEEK

(Double EXP Weekend)

when you are in that you get 2 EXP points per winning game.