Here is the full list of all 25 Planet of Lana achievements.
Discovered a secret shrine
Rescuing Mui
Pet Mui for the first time
Surviving the invasion
Sneaking past the chef
All secret shrines discovered
Finding a way in
Finding the amulet
A mystical discovery
Finding the bracelet
Together to the end
Making it past the robot army
Freeing Mui
Completing the game
Game completed without dying
All achievements completed