Here is the full list of all 22 From Earth achievements.
Unlock 20 alien sentences
Buy 10 items from stores.
Finish Chapter 1
Unlock 10 alien sentences.
Hug 30 aliens.
Build a laser gun.
Finish the game without you or you followers hurting any living beings.
Finish the game without attracting the alien government to attack you.
Finish Chapter 2
Finish Chapter 3
Take out 6 enemies without killing them.
Find and wear all eight disguises.
Save Anthony before it's too late.
Finish the game becoming notorious.
Use gestures to explain English 3 times.
Take a photo of an alien while they are kissing.
Take care of your dental hygiene.
Find a way to disguise yourself
Unlock the 10 polite sentences.
Play through all of Chapter 2 as a skeleton.
Have the sunglasses in your inventory by the end of chapter 3.
Save Kra from becoming Panasunyss.