Here is the full list of all 49 Disneyland Adventures achievements.
Completed the tutorial
Completed a task.
Completed 21 tasks around the park
Completed all of the missions for Star Command and Buzz Lightyear
Completed all of the adventures with the Fab Five
Completed all of the adventures in the park
Helped Winnie the Pooh and his friends in the Hundred-Acre Wood
Won the platinum badges on Buzz Lightyear's Astro Blasters and Finding Nemo Submarine Voyage
Acquired all of the magic items
Beat Captain Hook and Blackbeard in swordfights
Found 21 Secrets in the Haunted Mansion, Jungle Cruise and Winnie the Pooh attractions
Won the gold pin badge on all 4 of the mountain attractions
Danced perfectly in the Princess Fantasy Faire, "it's a small world" and Alice in Wonderland
Won the bronze pin badge on all attractions
Won the silver pin badge on all attractions
Won the gold pin badge on all attractions
Won the platinum pin badge on all attractions
Completed 50% of Main Street, U.S.A.
Completed 50% of Fantasyland
Completed 50% of Tomorrowland
Completed 50% of Critter Country
Completed 50% of Adventureland
Completed 50% of New Orleans Square
Completed 50% of Frontierland
Completed 50% of Mickey's Toontown
Completed an autograph album
Ridden on all of the classic rides
Taken your first photograph
Completed all of the photo albums and autograph books
Photographed a Hidden Mickey
Photographed half of the Hidden Mickeys
Photographed all of the Hidden Mickeys
Collected 50% of the Wand Secrets
Collected 50% of the Megaphone Secrets
Collected 50% of the Spyglass Secrets
Collected 50% of the Water Squirter Secrets
Collected 50% of the Fishing Rod Secrets
Collected 50% of the Blaster Secrets
Conducted a perfect performance from all of the musical acts
Used all of the gestures on the same character
Danced with all of the princesses
High fived all of the Fab Five
Tried to hug all of the villain characters
Put on an awesome fireworks display
Conducted a perfect parade
Completed an attraction chapter with 2 players
Had a photo taken with a character and another player
Bought an item from each shop in the park
Bought a costume and wore it in the park