Captain Toad: Treasure Tracker -- Episode 3-8. Up 'n' Down Desert

Toadette finds herself in a desert with P-Switches and Piranha Sprouts. The P-Switches make parts of the desert rise and fall. Hit either P-Switch next to the Piranha Sprout to lower it. The plant in front of it contains the first gem. Walk up the ramp near the corner without hitting a P-Switch until you reach the narrow path that is level with the second gem. Step on the P-Switch on the path to raise a part to fill in the gap to get the gem. The part in the gap has a Piranha Sprout, so you may want to pick it up beforehand so it doesn't attack you. Once you get the gem, step on a P-Switch so you can progress up the ramp around the corner. You'll have to hit all three P-Switches here to progress, as stepping on the P-Switch near the corner will block your access. Step on it first, which raises the platform, then the two near each other to lower, then raise the platform. When you step on the P-Switch in the corner, you'll lower the platform. There is a Piranha Sprout in the gap in the path to the Star. Pick it up, walk up the ramp, and toss it at the third gem. To cross the gap, you'll have to step on the three P-Switches in a specific order: the one near the Piranha Sprout, then the one at the base of the ramp, then the one partway up the ramp. Cross the gap to the Star.

Special Challenge: Use Switches eight times to clear the course.
To do so, step on one P-Switch to lower the platform, walk up the ramp and around the corner, and hit the three P-Switches as before. Hit the P-Switches in the area with the ramp to the Star in the same way as before.

Captain Toad: Treasure Tracker -- Episode 3-7. Cagey Conkdor Caper

Toadette finds herself in a caged-in area with some Conkdors. There are four Conkdors lined up in a row near the start. The first gem is in front of the third Conkdor from the left. You'll have to be quick to get it. Drop down on the right side and go through the yellow pipe on the left side. You'll be on an upper level. Drop down to stomp on the leftmost Conkdor, then go through the yellow pipe on the right. This leads you to a spinning cylinder that you walk in to rotate, like a hamster wheel. There's a hole in one part of the cylinder. Drop into the cylinder, then rotate it until the hole is at the bottom. Drop through and you'll land on a yellow platform. Drop down towards the row of Conkdors and pull the handle. This will make the Conkdors rise to the upper level. Drop down to the ground and go through the yellow pipe on the left. Let the Conkdors break the bricks for you. The second gem is in the plant on the far right. Drop down where the leftmost Conkdor used to be and you'll find a ladder to another cylinder. Roll it to the right to reach the third gem, then drop in through the hole. Roll the cylinder to the right and exit the cylinder. Near the corner, you'll find a hidden Gold Mushroom. Drop down to the Star.

Special Challenge: Find the hidden Gold Mushroom.

Captain Toad: Treasure Tracker -- Episode 3-6. Biddybud Snow Stroll

Toadette finds herself on a tiled cube with some Biddybuds, that walk an interesting path. Not all of the tiles are stable and will fall away permanently when you step on them. This takes you inside the cube, where some gems and Fuzzies are. The plant by the fence has the first gem. Drop inside the cube. The Fuzzies will move back and forth along long paths. On one side, they will guard the third gem in an alcove. The second gem is in a corner, on a platform under a tile. To get it, you'll have to exit the cube. Use the fans in the corners to do so, then step on the corresponding tile to drop down to the gem. There's a long chain of Fuzzies that passes through the area, so be careful. When you have all three tiles, exit the cube and follow the Biddybuds to the part of the cube that was originally missing a tile that isn't in a corner. Many of the tiles near it will fall away, so you may have to walk on a diagonal to it. Drop down and walk a short distance to the Star.

Special Challenge: Don't break any tiles.
To do so, follow the Biddybuds, who will only step on tiles that won't break.

Captain Toad: Treasure Tracker -- Episode 3-5. Stumpy Springs Sanctuary

Wingo drops Toadette under a tall tree with a river flowing by it. Go under the tree's slide and drop down the ladder into the water. Nearby, in an underground alcove is the first gem. Use the ladder to get out of the water, then walk towards the log with an Ant Trooper walking over it. Drop down near a gem you can't reach yet. There's a plant with ten coins in the corner. Climb the ladder to the log with two Ant Troopers. It's a little difficult to go through the log without being hit, but you should run quickly. Leave the log and drop down, then cross the log raft to a P-Switch. This raises the log raft up to the log at the top of the tree. Drop down into the log and you'll find the second gem. There's a hole in the log at the other side. Drop down from it to hit a P-Switch, which makes the log rotate. Drop down under the log with the Ant Trooper and walk up the ramp to the third gem. Make your way back to the rising log raft and drop into the spinning log. Drop onto the log with the two Ant Troopers and you'll find a hidden Gold Mushroom at the end closest to the raft. Return to the spinning log and drop down onto the tree's slide. Walk up the slide to the Star.

Special Challenge: Find the hidden Gold Mushroom.

Captain Toad: Treasure Tracker -- Episode 3-4. Pickax Cave Plummet

You need 80 gems to unlock this level. I have 117.

Captain Toad finds himself on a small field with a small body of water. There's a plant moving around. Pick it to get a pickax. Use it to break the brick wall in the rocks, then drop into the water. At the bottom are some bricks. Break them to get the first gem. Pull the handle below to get back up. Pick the plant near where you started for another pickax. Go through the bricks behind you. You'll find more pickaxes and some Piranha Sprouts. Walk around the corner twice and find an area where you can drop down. With the pickax, drop down to the right for the second gem. Drop down further and you'll find some Mud Troopers. Head to the left. There appear to be some bricks blocking your path, but you can go behind them. Go up the stairs, then down and you'll find Green Toad. There are two plants in front of him: one has a Mushroom and the other has a turnip. A Mud Trooper will appear on the stairs, so defeat him with the turnip. Go up the stairs and you'll find more turnips and Mud Troopers. Go around the corner and you'll find a lone Piranha Sprout. One of the nearby plants has a pickax. With it, drop down on the side with the Piranha Sprout two floors down and you'll find the wall bricked up. Use the pickax to break it to get the third gem. Drop down to the Star, which is guarded by Mud Troopers. Behind the brick wall on the right are coins and a Gold Mushroom.

Special Challenge: Don't break any bricks.
You can't use the pickax to break any bricks. There are parts between the bricks where you can drop down.

Captain Toad: Treasure Tracker -- Episode 3-3. Beep Block Sky Plaza

Captain Toad finds himself on a small network of beep blocks. Walk forward onto the pink beep blocks, then to the safe blocks. Pick a turnip and toss it at the first gem, which can't be reached when the blue blocks appear. Go to the right and you'll find a tunnel under a safe block. Go through it when the blue blocks appear, then go around the corner and you'll find another tunnel with the second gem. You can reach it when the pink blocks appear. Backtrack to the turnips, then head left to where there are ladders on the pink blocks. Climb the ladders, which will still be there when the blue blocks appear. You can hang onto them while you wait for the pink blocks to appear. At the top, drop down to the blue blocks, then the safe block in front of them. Dodge the flames of the Fire Bro. When the blue blocks appear again, run down the long set of blue blocks and hang on the ladder. At the top, there's a safe block with a Mushroom. Climb up the ladder on the pink blocks and pick a turnip from the safe block. When the blue blocks appear, stand on the nearest one and hit the Fire Bro with it. Carefully time your drop from the blue block to the pink blocks below, then pick the plant where the Fire Bro was for the third gem. When the blue blocks appear, drop down and go to the Star.

Special Challenge: Do not take damage.

Captain Toad: Treasure Tracker -- Episode 3-2. Seesaw Sizzle

There are several Spikes in this level. They throw giant spike balls onto the seesaws in front of them and into the lava. If you stand on the opposite side of the seesaw when a spike ball lands on it, you'll launch and stomp the Spike. Stand on the first seesaw and let the spike ball launch you. On the next seesaw, in the corner, let it tilt down towards the platform to reveal a hallway. Walk around and you'll find a plant with the first gem. Go past the spike ahead and drop down around the corner. Walk under the seesaw towards the Star and you'll find the second gem. Step on the nearby P-Switch to move the seesaw so you can cross under it to the other side. Climb up the ladder, being careful to avoid the spike ball. You'll find the third gem under the seesaw. Cross the seesaw to the right of it to reach the seesaw to the Star.

Special Challenge: Do not defeat the Spikes.
You'll have to use the ladders and have good timing to do this.