Here is the full list of all 25 Planet of Lana achievements.
Surviving the invasion
Sneaking past the chef
Discovered a secret shrine
All secret shrines discovered
Rescuing Mui
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
Pet Mui for the first time
Completing the game
Game completed without dying
All achievements completed