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.
No thank you ma’am
Dispose of the Duck
Find an alternative route
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
Accept a smooch
You really went and did it, huh?
Find every diary page
Satisfy 15 habiticians
Find the Duck’s true owner
Clean Kamal's teeth
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