Disneyland Adventures

There are 30 secrets across Haunted Mansion, Jungle Cruise, and The Many Adventures of Winnie the Pooh. Each attraction has ten secrets to collect, all of which must be collected for the 'Portal Master' achievement. As most of these levels contain split paths, at least two runs will be necessary to collect all secrets from most levels.

Haunted Mansion
Location: New Orleans Square, close to the entrance to Critter Country

Chapter 1: Stretching Room, Secrets: 5
1. Make a left at the first fork through a door frame
2. Proceed straight past the first fork
3. Make the correct pose at the giant clock
4. Make a right at the second fork through a door frame
5. Wave at the skeleton in the coffin

Chapter 2: Escape the Mansion, Secrets: 5
1. Point your flashlight on four crystal balls
-At the end of the first hall on the left during your third stop
-Take a left at the first fork, the ball is being held by a statue
-Located on Madame Liota's table in the seance room
-Located on the far left in the dining room
2. Take a left at the first fork then your first right through a door
3. Take a right at the first fork and shine your light at the candleabra above the piano
4. When running down the hallway to escape, follow the ghost on your left for a split path.
5. Shine your light on the organist in the dining room


Jungle Cruise
Location: Adventureland, beside Baloo (the only attraction in this area of the park)

Chapter 1: River Cruise, Secrets: 4
1. Spray 8 Hippos (more than 8 are available)
2. Wave to the explorers at the hippo waterfalls
3. Spray both the rhino harassing the explorers
4. Just before the end of the chapter in plain sight

Chapter 2: Native Village, Secrets: 3
1. Hit 40 gorillas with bananas
2. Hit 3 armoured gorillas (they will be carrying shields)
3. Don't fail the final gorilla button sequence

Chapter 3: Kayaking, Secrets: 3
1. Hit 8 gorillas with fruit (knock fruit back with LT or RT)
2. Take a left at the second fork and hit all boxes
3. Take a right at the third fork


The Many Adventures of Winnie the Pooh
Location: Critter Country, along the right wall before crossing under the rail bridge

Chapter 1: A Very Blustery Day, Secrets: 4
1. Collect 15 red balloons
2. When floating over a stream, in the upper left on a branch
3. Take a right at the second fork, next to a tree on the left
4. Behind the last tree at the end of the chapter

Chapter 2: Bouncing with Roo, Secrets: 4
1. Wave to Roo at the start of the level (sometimes requires multiple attempts)
2. Collect 12 honey pots from beehives
3. Take a right at the second fork
4. Take a left at the third fork

Chapter 3: Finding Presents, Secrets: 2
1. Hit back all special gifts (a horn indicates they are coming)
2. Hit back Eeyore's tail

Credit to Seanesso on GameFAQs
Thanks to everyone for indicating the collectible I missed!