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