Wall Climbing with Vehicles
From Halopedia, the Halo wiki
Introduction
In Halo 2 if you take a Ghost, Spectre or Wraith you can climb walls using their Boost. This is helpful to get to high areas you can't reach on foot. The cliffs you can get up to are great for using the Sniper Rifle. This was first discovered in 2007 on the level Coagulation. There may be other maps that you can do this in but have not been discovered yet.
=Vehicle that can climb walls
What make the vehicles able to Climb?
The reason these vehicles can Climb wall is because they hover and can use boost. If a Warthog tried climbing the wall it would wall back because it is to steap. The Ghost for example can climb because there are no wheel and the hover lifts it up along with it boost which helps.
How to climb a Wall in Coagulation
To climb a wall in Coagulation you will need a vehicle that can climb walls. After you have a Ghost look for a slanted part of the rock wall that makes Coagulations Valley and use the Ghosts boost to climb the wall. This is helpful to get to high areas you can't reach on foot. The cliffs you can get up to are great for using the Sniper Rifle.
How to Climb a wall in Burial Mounds
In Burial Mounds around the Back side of the map there is a hill that runs along the map if you use a Ghost you can climb it. It is a great sniping spot.
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