Instructions
Pick up a weapon, such as a baseball bat, if desired. A weapon is not required to break a wall, but it helps you break through the wall faster.
Find a cracked wall. Face the wall and hold down the "LT" button to enter the combat stance.
Press "X" repeatedly to do a heavy attack with your fists or weapon. It takes about five hits if you use your fists to break the wall or two hits if you use a weapon.
Press "A" in front of the broken wall to climb through it and reach the next room.