Here is the full list of all 42 Ghost Song achievements.
Help your friends escape.
Complete the game on Original difficulty.
Defeat a Big Bot.
Reach Mabec.
Receive a special gift from Molly.
Once again, help to repair Gambler.
Fully repair Gambler.
Defeat Old Singer.
Visit The Cut Machine.
Have a chat with Relic.
Continue to assist in the repair of Gambler.
Heal yourself many times.
Defeat Henriette again.
Say goodbye to Mutt.
Bring a third part to Gambler.
Destroy many innocent creatures.
Defeat Vek.
Locate many Big Bots.
Help to repair Gambler again.
Defeat Elsom.
Help to repair Gambler.
Reach level 30.
Defeat Henriette...
Defeat many enemies.
Defeat Kika.
Defeat Dolly.
Arrive at the crash site.
Defeat Kellunhelk.
Obtain many modules.
Obtain many weapons.
Obtain many Healing Cores.
Spend time with Pasha.
Find Charley.
Get to know Saymund.
Get to know the crew.
Help Gili.
Destroy many Roslock creatures in the pit.
Do a killer Painwheel juggle.
Complete the game without dying.
Show off with flowers.
Push the large piece of junk down the hill.
Finish the game in under 3 hours.