Here is the full list of all 22 From Earth achievements.
Unlock 20 alien sentences
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 1
Finish Chapter 2
Finish Chapter 3
Take out 6 enemies without killing them.
Find and wear all eight disguises.
Buy 10 items from stores.
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.