Here is the full list of all 42 Ghost Song achievements.
Obtain many Healing Cores.
Say goodbye to Mutt.
Obtain many weapons.
Visit The Cut Machine.
Find Charley.
Defeat Old Singer.
Help Gili.
Have a chat with Relic.
Help your friends escape.
Complete the game on Original difficulty.
Defeat a Big Bot.
Receive a special gift from Molly.
Once again, help to repair Gambler.
Fully repair Gambler.
Destroy many innocent creatures.
Defeat Vek.
Locate many Big Bots.
Get to know Saymund.
Continue to assist in the repair of Gambler.
Defeat Kellunhelk.
Bring a third part to Gambler.
Heal yourself many times.
Defeat Elsom.
Reach level 30.
Defeat Henriette again.
Help to repair Gambler again.
Reach Mabec.
Help to repair Gambler.
Defeat many enemies.
Defeat Henriette...
Defeat Kika.
Defeat Dolly.
Arrive at the crash site.
Obtain many modules.
Spend time with Pasha.
Get to know the crew.
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.