Jump on the trunk after the castle to find a star. Then use your helmet to create an opening to the path beyond. Watch out for the Scorpion, and jump into the gap. It will lead you to 2-Z, but before you proceed, jump out of the right side of the gap to return to 1-Z. When you jump back out, you'll find a moon.
2-Z
Drop down below the platform, and collect the sign post. Pass below the tunnel, and then use the trampolines to get over the columns, then pass through the high passage. Watch out for a Snake that falls down after the last column.
2-Y
Use the platforms to cross over the water. Jump on the first pipe to make a star appear. Jump up the small platforms to reach a candle. Shoot the candle to make a star appear, but you have to shoot it low or the star will be too high to collect.
2-X
You can squat down the first pipe, and it will transport you a bit forward, to a pipe below a platform with a candle. You can use the pipes that you passed to reach the candle and shoot it to reveal a star. Continue to jump over the blocks, and shoot the candle before the water for another star. Jump over the water and continue.
2-W
Use the trampoline to jump over the first wall, watch out for the Hedgehog. Drop down to the second trampoline, but stay on the ground to pass through the tunnel. Jump up to the middle platform to reach the top platform and over the column. Drop down to the floor and shoot out the left wall to reveal a lamp. Collect it, and then return to the platform above.
Destroy the blocks, then jump on the floor below to find this doll.
2-V
After dropping down off the wall, shoot out the bottom of the steps to your right. Clear out as many block as you can, and start jumping on the floor beneath those blocks. You should find three blocks that clear out, and you'll find a Hao Doll in the middle block. Then jump up the steps. Proceed down the other side. You can jump through the water to get beyond, but there is a secret entrance to the tunnel below. Jump on the blocks before the water and below the low overhanging structure attached to the ceiling. Then run through the lower tunnel, and shoot the wall at the end.
2-U
Jump on the pipe before the blocks to find a star. Jump through the blocks, and past the town. Shoot the candle on the platform above to find a star, and then collect the sign post below. Jump up to the platforms above the water to clear the pools below.
2-T
You will have to climb up a set of steps that will lead to platform that carries you over the majority of this section. Ultimately, you will see a moon which you cannot collect. The only way to reach this section is through a secret hole in the ceiling of the third world.
2-S
The first of the pair of pipes has a star. The middle section of the set of blocks which hangs from the ceiling can be shot out. You can shoot it from either side, either from the platform to the right or by using the trampoline block to reach the small ledge to the left. From there, jump up to the high blocks to the left. Watch out for the Snakes that approach you when you reach the floor.
Find this doll in the wall.
2-R
Carefully remove the Snakes as you navigate the platforms over the water. If you stay on the low path, you will reach a pipe at a dead end. It make tak you forward on to 2-Q, or it may take you back to the start of 2-R. Otherwise, jump up to the platform above the pipe, and fall down. Shoot the Hedgehogs as they appear. When you reach the high platform with the side bounce blocks in the wall, bounce off of them and start shooting the wall to your right. Not only must you shoot out the wall to proceed, but you'll also find a Hao Doll inside.
2-Q
The very first pipe contains a star. You'll have to leap at the bounce wall to get a boost up and over it, and then triangle jump between the two walls to proceed to the left. After the town, you have a choice; choose the bottom path to jump over pools of water, or jump up the small ledges to reach a platform where you must shoot or jump over Scorpions. Either way, collect the sign post on the floor.
2-P
Jump up to the high platform, and then drop down to the pipe through the gap. This pipe contains a star. If you push down, you will be returned to the previous pipe. Continue left and jump on the platforms while avoiding Scorpions. The next pipe also contains a star.
2-O
When you reach the bottom of the stairs, use the cloud to transport over the water. After running below a platform, the middle pipe contains a star.
2-N
The blocks here are arranged to form a winding pathway. When you see a candle, use the small ledge to jump up and shoot it to reveal a star. Then carefully drop back down to avoid the water and the skull.
2-M
After you run past the town, you will have to jump over a series of shallow and bottomless pools of water. Watch out for the dragonflies that hover above. If you get hit by them when you jump, they can send you into the water. Then collect the sign post and enter the water.
Take the bottom path all the way to the right. Then climb up the step blocks to reach the high path. Before you approach the spikes, jump on the middle block below the ceiling fan to reveal a hole to the center path and take that instead. Shoot out the wall after the flowers, and then jump back up to the high path. Either run up and around the 1st door, or shoot out the block to the right to access it. (You can shortcut to this door from the entrance by jumping on the back of a Scorpion to reach the ledge before the door.)
Back layer of door 1
Either run right and jump up and around, or shoot out the wall to the left of the door. Then proceed left until you encounter a mini-boss, a preying mantis. Defeat it and collect the key. Then return right and drop down to the bottom of the steps. Shoot out the lowest set of blocks until you reveal a moon. Collect it to restore your health and proceed to the left to reach the exit door, jumping over the spikes where necessary. The blocks at the end of the bottom path can be destroyed.
The Faster Boots allow you to run by tapping the B button.
The Faster Boots
When you arrive, you will be in a small passageway with a door and a pair of boots. Collect the boots for extra speed. Then enter through the door. On the other side, jump up below the key to break the floor and collect the key, then use it on the door to the left.
Front layer to door 2
Carefully jump over the two bottomless pools of water, watching out for Snakes as you proceed to the right. When you arrive at steps, instead of jumping up them an enduring the spikes on the floor, shoot out the steps and continue on to steps that will lead you to the top path. In order to proceed, do not drop down to the small platform in the middle, as you cannot return to the top and will have to retrace your steps. Stay on top and keep moving to the left until you can drop down to the left of the second door.
Back layer of door 2
Whether you take the middle path, the lowest path, or run to the right in order to access the highest path, you'll need to fight the mini-boss mantis to collect a key. The middle path dead-ends, but you can jump above the last flower and use the flower's mantle to climb up to the highest level. The highest path has a ceiling fan that you can jump beneath in order to create a hole to the lower level. To the left of the bottomless pool of water on the lowest level, you can shoot out the wall to reveal a moon, but you'll have to carefully jump over the water first to reach it. Use the Fatser Boots to give you enough momentum to clear the water. Then reach the exit door all the way to the left.
Front layer to door 3
You can either take the low path or the middle path until you can reach stairs that will take up back up to the top. The middle path has spikes, while the lower path has stairs that you can shoot out, flowers for bonus points, and pools of water that you must be running quickly in order to clear. Reach the right side and climb up to the top layer, and run back to the left in order to access the third door.
Jump on the blocks above to access the doll.
Back layer of door 3
Move to the left to fight the mini-boss mantis and collect a key. To collect a Hao Doll, take the top layer all the way across from the right side to the left side. Shoot out the walls as you proceed, and when you reach a vent by a dead-end, jump on the floor to break the blocks away. Drop down and collect the Hao Doll. Now, jump above the place where you found the doll and break away some of the blocks above you. When there is a hole in the ceiling, jump up and start shooting at the remaining blocks to the right until you break the block above the wall to your right. Now you can jump up to the top of that wall and proceed back to the right. There are a number of blocks that can be broken between the three levels, but your ultimate goal is to reach the exit door on the left side of the lowest level. Before you leave, shoot out the wall to the left to find and collect a moon.
Front layer to door 4
As before, you want to get all the way to the right to reach the top layer and run back to the left. The fact is that you can use a Scorpion to jump up through the gaps and shortcut a majority of this section without missing too much. The only hidden item is a Wizard Hat inside the set of steps to the left of the last bottomless pool of water. The speed of the Faster Boots will help propel you over the gaps in the floor.
Back layer of door 4
Proceed to the left to locate and fight a mini-boss. Defeat the Mantis to collect the key. Take the top level to the right, but shoot the blocks in the middle level that form steps to the left of a flower to locate a moon. Collect it to restore your missing health. You must use the Faster Boots to make it over the last gap before the exit. Take the exit, and you will find the Symbol of Knowledge. Collect it, drop down to the level below, and take the door back to the back layer. While you can shoot the blocks that lead to the bottomless pool of water on the right, you cannot leap over it. Instead, simply head left to the castle exit.
