Oddworld Forums - Preview of munch that explains controls!

Here is what they say about the controls

The control is tight and accessible, keeping the game from being too intimidating. You'll control the pair with the left analogue stick, jump and perform other context-specific actions with the A button, adjust the camera with the directional pad and trigger special abilities with the right analogue stick. You swap control between Munch and Abe using the black face button, and you use the white face button to centre the camera on your character. The right trigger is used to check your character's health and available "spooz," which is psychic energy used to open doors. The left trigger is used to chant as Abe or use Munch's sonar, which is useful for finding fuzzles on a stage or opening warps to send fuzzles to safety. You'll be able to use "gamespeak" with the X, Y and B buttons - lightly tapping the buttons produces one response, while holding it down produces another. For example, a quick tap of Y addresses one creature, and holding it down addresses an entire group.