Here is the full list of all 21 DreamWorks Spirit Lucky's Big Adventure achievements.
Call the herd to The Secret Valley
Prevent Hendricks from finding The Secret Valley
Avoid the bear in the Mountain's pass
Lucky is trapped in the Old Copper Mine! Find help in Miradero!
Scare the wolves to help the herd cross the Red Oak Forest
Photograph Miradero, at night, for Aunt Cora
Free Hendricks' horse and lead him to the herd
Help Dad by taking photos of the Railway expansions
Chase Hendricks and attempt to recover the map
Reach the Starfish Shaped Rock
Help the herd cross the bridge
Reunite the mare with the herd
Cross the river through the Beaver Dam
Follow Hendricks to discover the mares whereabouts
Help your PALs with their chores
Ride to Crow's Nest Hill
Complete the photography tutorial
Help Dad find his tools
Show the map to your PALs
Discover what is in Mom's box
Complete your chores in the Stable