Covenant Forces are attacking Earth the last Human Planet. Master Chief arrives in Longsword Fighter above Earth and dives out on to Covenant Battle Cruiser.
Covenant Homeworld (maybe)
Threshold (you know the planet Halo orbits)
Another Halo (or else why would they call it Halo 2?)
Spectre (Covenant Bus)
Phantom (Cov. Dropship)
Energy Sword (possibility)
Fuel Rod Gun (c'mon even Grunts use them!)
New and Improved Marines
Shadows for sneaking
Tables for cover
The ability to run
Kick people out of moving vehicles
Look around corners
Double 1-handed weapons!!!
Guilty Spark (Monitor)
The Flood (yes that's what I said.)
Oh and Sarge is back!