Here is the full list of all 12 Pid achievements.
Find 60 secret areas.
Complete game on hard difficulty.
Complete the game.
Complete the game with all 12 secret souvenirs.
Find all the secret constellations.
Enter the entourage HQ.
Collect 5 secret souvenirs.
Find 30 secret areas.
Find 10 secret areas.
Defeat the Butler Orlando.
Find a secret constellation.
Collect 1 secret souvenir.