Secret Marine on The Covenant

In Halo 3, on the level The Covenant, when you start at Rally Point Bravo while playing on at least normal difficulty, grab a mongoose and drive straight ahead at full speed. When you get to the part where a marine says, "citadel in sight". Get off of your mongoose and grab a ghost as soon as possible. Drive the ghost ahead as normal. When you get near a tunnel, turn right and climb straight up the mountain. Occasionally, when you climb up the mountain, there may be two marines. Also, the marine will not appear when you play on Xbox live or with more than one player.

Marine Details

 * The marine is similar to the one that appears in Halo: Combat Evolved.
 * The marine will usually change faces every time you go up the mountain.
 * The marine will carry only an Assault Rifle and will usually keep it on his back
 * It is possible to push the marine down the hill.
 * He appears to be able to take more fall damage than most other marines but this can not be confirmed.
 * This marine is capable of driving and shooting however is a very poor driver and will usually drive down a hill in a warthog (causing you to get killed) or crashing into walls while driving a Hornet.
 * The marine moves like normal marines.
 * The marine may sometimes say special dialouge about himself or about how the Master Chief is acting weird around him.
 * The faces of the marines may be faces of developers from Bungie.

Video
http://www.youtube.com/watch?v=FcvTK4ewVq0