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
Leave unfinished business at the Habitat
Some crimes can’t be forgiven.
Find an alternative route
Escape the Habitat
Forgive and forget.
Satisfy every habitician
Accept a smooch
No thank you ma’am
Find every diary page
Clean Kamal's teeth
The secret’s out...
Grip a Y’owl for Borbra
Get a very high score at Whack-a-Molar
Dispose of the Duck
Satisfy 15 habiticians
You really went and did it, huh?
Unlock the Terrace
Discover a hidden sweetheart
Help a friend in need
Unlock the Lounge
Unlock the Carnival
Hit Ronbo with a golf ball
Satisfy a Habitician