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