Ok on the second level of Halo 2, ~outskirts~ Go to the building were the turent is.Then jump off of it towards the ally were the covent come out.In the Ally ~close to the building~ you will see a path that leads around to another exit out into the Ally.About half way between the first entrence and the exit you will see a pile of gabage leanded up agenst a building. Crouch down and though a frag gernade underneath your show and jump.~this is called the "gernade jump"~then you will be on a leadge.Look around untill you see another lead and gernade jump onto that one.Then just walk around the corner and go up the building.With this cheat you go go in places you wouldn't have even dremt of.

Jeffevi~