Actually, the controls really would be an awkward problem.
But from what I remember, the most important controls are:
Forward, Backward, Left, Right -- Digital stick
Sidestep Left, Right -- L & R
Action, Shoot -- A
Jump -- B
Draw guns -- START
Dive, Walk -- SELECT
Regarding the last two, diving would be a little difficult as you would need to press B and SELECT simultaneously, but every person who's ever played Tomb Raider knows walking is way more important, and would not work mapped to the START button.
I suppose:
* holding START and pressing L & R could scroll through the weapons list.
* double-clicking START could activate the savegame/item menu.
* double-clicking SELECT could pick up an item.
Is this intuitive? Am I forgetting something? Let me know.