Just to the right of your starting position, there's a bomb block. Ignore it and hit its fellow just to the right to provide an opening you can drop through for a Key. Carry that with you to the right to open the door. Enter it.
In the next corridor, you'll find a lot of wonky behavior. Some of the ledges will disappear to reveal spike beds, so watch for those. You also will find enemies that materialize out of thin air, so be ready for them also and keep to the high road for an easy Keychain that is resting on a ledge near the top of the screen. As you continue right, watch for an apparent doorway. It's actually an illusion and will try to smash you if you attempt to enter it. Instead, keep going further right to find a second "door," this time genuine.
Through that door, you'll find you can advance right through a mirror. Doing so will strip you of any ability you have. Now as you continue, watch the back wall. It's a giant mirror, and it shows the location of invisible enemies you can't see in the foreground. Proceed, and inhale but don't swallow one of them. You want to keep it as a star, to fire at a bomb block that will remove an obstruction so you can enter a new door.
This is another room with a long mirror. Advance as you did before, and soon you'll reach a door. It's another fake. If you keep going to the right from there, you can find another mirror to pass through. Just beyond that is a second fake door, and after that a real one. Enter the real one.
In here, you'll have a long passageway to work your way along. In the foreground, enemies appear and there are disappearing blocks and ledges to leap along. You need to move in a hurry, though, because in the background there is an enemy running on a suicide mission with a key. His goal is to reach a spike bed at the far right of the area, which will destroy him and the precious key. Beat him there, then use a 3D Warpstar to drop into the background so you can take out the enemy and grab the key. Use it in the foreground, to open a gate and obtain a Sun Stone. Then exit the door to the right.
You're now in a room with five doors and some enemies. Some of these doors are false, so be careful. You can float to the upper right corner of the room and destroy a block to find a Keystone. Enter one of the doors to the left and you'll appear in a room with a 3D Warpstar. Ride it to the background and enter the door. Now head left, and stand in the dip with a curtain behind it. You should be able to press Up to enter a not-especially-visible door. It leads to the stage's second Sun Stone. Now go back through the door and head right. Enter that doorway to appear in another chamber with a ladder that leads up to yet another door, which you should enter.
Drop down along some ledges and head right in this new area, through a mirror. Watch the lengthy mirror in the background to see what the cardboard signs in the foreground are hiding, which sometimes is stars and sometimes is a spike pit or enemies. Keep going and you'll see two doors. The one you can access at the moment is another trap, so just keep going past more enemies. Advance until you can see the top of a star in the mirror. You can drop down to collect it, then drop down again and head left for a Keychain. Continue left from there to find and enter a door. It takes you to a room with more signs obscuring things. You can watch the mirror to spot spiked balls and float over or between them. Advance far enough right and you'll snag the final Sun Stone. Then you should enter the door.
Now you are back in the main room with the mirror that lets you see dangers lurking behind signs. Continue right and kick a bomb block to clear a path to a ladder. Descend the ladder and head right to find a glowing doorway. Note that the ledge beneath it will vanish once you put weight on it, so enter the doorway quickly.
You are now outside. Float straight up to find the Rare Keychain: Dark Daroach perched atop a tent. Grab it, then head right to the goal door and exit the stage.
NEXT: Lollipop Land - Stage 5
