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