
FIRST: You need the Mod the sshhoott posted in the PC Halo forums of files.halomods.com and A trainer with Unlimited Over Shield (I reccomend Gregys or Phears)
SECOND: Make a lan (or internet if you wish) with all vehicles...due to the mod it has to be bloodgulch...|WARNING: I Have a GeForce 5200 128 MB and I had to turn my graphics settings down when I was running 640x800 O_O! I reccomedn you turn declas and particles off| go into the base you spawn at and get an AR and a Shoty Turn the Tranier on w/ Unlimited OVre Shield,Ammo,Covie ammo...check to see if you can wall walk...if you can GOOD! If not ...STILL GOOD just wont be as easy...anyway go outsid,get the AR out and fire at the ground...you should fly into the air....in midair switch to the shotty and when your just a little higher inn the air than your average jump fire the shotty...if your timing was correct one of three rhings things should happen 1: You fly into the middle of the map or an area generally open and just hit the ground 2: You'll fly into the air and just hit a wall more than likely sticking to it and you should be able to just walk around on the walls...or 3: (My Fav.) You'll fly stright up or high enough that you'll stick to the sky and will be able to walk around in midair!
TRY IT! I killed 2-3 hours while someone was on the Phone (DAMN DIAL UP!) killing time with this...expierment with other things...see if you can get pushed out of the grounds grpahics and fall so far that you cant do anything but satnd and look around.