Feet Firmly Planted
Feet Firmly Planted is an achievement in Halo: The Master Chief Collection. It is unlocked by completing a level of Halo: Combat Evolved without jumping. The achievement is worth 10 gamerpoints and can be unlocked on any level and any difficulty.
Typically, playing through The Pillar of Autumn requires at least one jump over the pipes immediately after leaving Cryo B. However, by walking into the slight incline of the pipes it is possible for a player to force themselves over the pipes, and in doing so avoid having to jump at all.