Sorry, you can't do that either. You have to use the default controls that straddle the length and depth of the entire keyboard. Mavis Beacon would have a fit if she had to play this. There is an option to use the mouse, but I'm not even going to go there. Combine this with the tacky animation and you've got some really serious control issues, especially when you throw in the dodgy collision detection.
Problems arise when the ground is anything other than spirit level flat.
Should a bump appear, no matter how tiny, you'll have to jump over it. To put this into perspective for a moment, there are even some cases where you can't climb the stairs the level designers put in for you to climb. Repetitive, frustrating and exceedingly difficult, especially when you consider its target audience. The Mummy , like so many games of late, has no mid-level save function. Implemented properly, the lack of an in-game save can add tension and greater immersion in the game, but get it wrong, and the player will end up going over and over the same piece of ground more times than even the most masochistic of gamers wants to.