New Super Mario Bros. Wii/World 2-2

Normal Strategy
Hit the ? Block for a Super Mushroom or Fire Flower, then slide down the hill. Pick up a barrel and throw it at the Spike enemy. Continue onwards, staying above ground level to dodge the Spiked Balls. Hit another ? Block for an Ice Flower and use it to freeze the Spike nearby. Continue, jumping to dodge the Spiked Balls. Go through the quicksand, jumping to stay alive, as an easy way to dodge the attacks of the next Spike. Run ahead, jumping over the Spinies on the hill, then slide down the other side of that hill. The next section is an elevator with many Koopas. Freeze them as necessary, but avoid turning them into shells, as these will often just hurt you. Right after the elevator, hit the midway flag, then go backwards into the large pit of quicksand. Allow yourself to be taken to the bottom, which leads to the first bonus room.

Bonus Rooms
The first bonus room is accessible from the giant pit of quicksand right before the midway flag.

Star Coin Strategy

 * Star Coin #1: Right before the midpoint flag there is a deep pool of quicksand. Go down all the way, hitting the P-Switch and getting the coins, and then hit the "?" switch and ride the platforms up to the star coin.
 * Star Coin #2: There is a point with several bricks, a moving platform, and a spike. Hit the leftmost brick to reveal a vine. Climb it, and use the POW block to drop the star coin down.
 * Star Coin #3: Where you land from the sky in the second star coin, go to the left to access a pipe with a mini mushroom. Go out, and go to the right and enter the pipe for the last star coin.

Items

 * Super Mushroom
 * Fire Flower
 * Ice Flower
 * Mini Mushroom
 * 1-up Mushroom
 * POW Block

Enemies

 * Goomba
 * Stone Spike
 * Spiny
 * Red Koopa Troopa