To play Halo online you need a working hub or router, a broadband connection running through your computer and 2 programs from Gamespy (Gamespy Arcade & Gamespy Tunnel). A detailed walkthrough for connecting can be found here.
Alternate Ending
To get a different, longer ending movie, beat the game on "Legendary."
Left Wide Open
If you're looking to to knock out the round shield wielded by the mid-sized aliens, then grab one of their weapons and hold the fire button down for a shot to charge. Now let it rip! It will permanently disable the bastard's shield, leaving him completely wide open.
Pistol-Whip It Good
Never underestimate the power of a well-placed melee attack. Smacking someone or something with the butt of your gun is great fun and immensely effective.
Best Anti-Flood Weapon
The combat shotgun is the best weapon when you fight the flood. It'll take them dow nin 1 or 2 shots.Forget the assault rifle or the plasma weapons shotgun is the way to go.
Fireworks
Through one plasma grenade in a wide open spot, then stick another directly on top of it if you do this fast enough the first gernade will launch the second and vuaola fireworks.
Your in My Seat
When one of your computer controlled buddies is in a vehicle spot/seat you want simply go over to that spot and press X. They will graciously move.
Infinite Grenades
To get infinite grenades, scorpion, and ghost in multiplayer- Go to the multiplayer screen: go to edit game types: In that menu you will have the option to make up your own game type.
Lost in Space
In the first part of the game when escaping from the ship when you reach the first escape pod area the first pod will leave. After it has left you can jump though the window with the duck jump ability. Then you will be stuck in space and you can't do a thing.
Leaving So Soon
On the 5th level(Assault on the control room)as soon as you are droped out of the Pelican(dropship) press X and then you will take back off in the pelican.
