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