Wall Hacking is the use of physics glitches in Halo: Combat Evolved, Halo 2 and Halo: Reach to force objects through walls and barriers. It can also refer to a subdivision of ledging in Halo: Combat Evolved that involves ledging in a wall that is sloped inward, or where the player is no longer standing on a ledge, but floating between ledges.
Wall Hacking is the use of physics glitches in Halo: Combat Evolved, Halo 2 and Halo: Reach to force objects through walls and barriers. It can also refer to a subdivision of ledging in Halo: Combat Evolved that involves ledging in a wall that is sloped inward, or where the player is no longer standing on a ledge, but floating between ledges.