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