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. Continue on, using barrels to defeat any Spikes in your way. When you reach the section with four rows of Spikes, wait for the moment when none of them have any ammunition to use, and quickly climb to the top. On the next moving platform, go backwards into a Warp Pipe leading to the third bonus room. Continue on the main path, being very careful if you are Mini. In the next set of platforms, ground pound the second barrel and enter the Warp Pipe to the fourth bonus room.

Bonus Rooms
The first bonus room is accessible from the giant pit of quicksand right before the midway flag. In it is a row of blocks and a P-Switch. Hit the P-Switch, then fall down, collecting as many coins as you can. You can use wall-jumps to increase the number you get, but keep in mind the fact that they will all disappear after a certain amount of time. Exit to the second bonus room through the Warp Pipe on the right at the bottom.

The second bonus room is accessible from the Warp Pipe at the bottom of the first bonus room. In it are two Spikes, a switch that creates moving platforms, and the first Star Coin. Use the switch to get to the Star Coin as quickly as possible, being very careful to jump over the Spiked Balls. If you have an Ice Flower, you can use it to freeze a Spike and use its body to get the Star Coin. Upon leaving, you are returned slightly farther along in the main path.

The third bonus room is accessible from a Warp Pipe to the left of the first set of moving platforms. In it are a lot of coins and a ? Block with a Mini Mushroom. Using the Mini Mushroom, you can collect all of the coins easily. You will need the Mini Mushroom to get the third Star Coin, and this is the only one in the level. You exit the way you entered.

The fifth bonus room is accessible from a Mini Warp Pipe behind two barrels. In it are two ? Blocks, a P-Switch, and the third Star Coin. By running across the water and wall-jumping, you can reach the Star Coin. The path you should take is outlined by the blue coins created by the P-Switch. Upon exiting, you are returned slightly farther along the main path.

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