Here is the full list of all 24 Smile For Me achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Find the Duck’s true owner
Find an alternative route
Forgive and forget.
Leave unfinished business at the Habitat
Escape the Habitat
Some crimes can’t be forgiven.
Satisfy every habitician
You really went and did it, huh?
Grip a Y’owl for Borbra
Find every diary page
Clean Kamal's teeth
No thank you ma’am
Dispose of the Duck
Satisfy 15 habiticians
Accept a smooch
The secret’s out...
Unlock the Terrace
Get a very high score at Whack-a-Molar
Discover a hidden sweetheart
Help a friend in need
Unlock the Lounge
Unlock the Carnival
Hit Ronbo with a golf ball
Satisfy a Habitician