Here's a crappy story just to give some background..

The Covenant decided to play a 'little' joke on the Spartans..(after they became friends XD) so they came to Bloodgulch, gave it a complete makeover, and ran away right before a spar competition was held (The game you're playing)
Let's go!!

Here's the changes..
Weapons:

1) AR - Plasma Pistol bolts- faster, more accurate
2) Shotgun- Plasma Bolts, Enhanced Accuracy
3) Pistol - Turret(Covi) Faster ROF
4) Rocket -Shoots Spartans, Melee is one hit KO
5) Plasma Pistol Charged stuns for 0.3 seconds and have a little force, primary fire is pistol bullets
6) Plasma Rifle -Higher ROF but more heat
7) Sniper - One hit KO, Lower ROF

Grenades have switched places
Fuel Rod is placed near Rocket Launcher
Vehicles:

Collision damage greatly reduced
Hog seats are all 3rd person, no turret just 1 Driver n' 2 Passengers
Banshee view is 1st person [to make it harder] Looks like Ghost*
*There's an error in the Readme, it says RHog instead of Ghost

Others:

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Flamethrower is replaced with Powerups (OS,Camo)
Scenery, text, and so many other changes I can't possible list them all ;D
The map is 'modeled' for Team Slayer, in CTF the flags are missing ;D
* Another error in the Readme, (sorry,sorry) you are NOT immune to fall damage. If you die cuz' of a 'typo' (AHAHAHA) it's not my fault..I told ya..
P.S. Here's what it looks like driving the 'Shee' A.K.A DDB-434

FINALLY! THE LINK!!! ;D
http://www.mediafire.com/?er4u2hn0yct
(bloodgulch.map)-no, no bitmaps you dolt, they're just schi/soso/scex changes..
Credits:
Fonzie, 002, Eclipse, Taxi and all the others who helped me complete this mod ;D