Here is a guide on how to unlock all of the achievements in Smile For Me game.
Goodie Two-Shoes: This is the first achievement you get! Nat gives it to you after you let her sniff one of the flowers from your windowsill.
Nosey Posey: You get this for finding all of the diary entries. There are only 5, contrary to popular belief.
Hired Gun: You get this for hitting Ronbo.
Tiny, Feathery Man: Capture a y’owl and give it to Borba.
One Man’s Trash: Retrieve the dentures from the Lounge’s toilet.
Dentist for a Day: Clean Kamal’s teeth.
Crowning Achievement: After getting an initial score of 21 at the Whack-a-Molar booth, come back and score 28 or more to unlock this achievement (and the air horn, which serves no purpose, to my knowledge, besides harassing your friends).
Master Photographer: Take a picture of Mirphy’s butt.
Friend of Clowns: Unlock the Carnival.
Who’s There?: Unlock the Lounge.
Miss Fortune: Unlock the Terrace.
Pesky Bee: Make 15 habiticians happy.
Flower Brat: Make all 22 habiticians happy.
True Anarchist: Hit Randy with the pickle jar until it cracks open.
Good Neighbor: Have Gillis open the pickle jar, then return it to Randy.
Out of Quack: Burn the rubber ducky in the carnival’s tire fire.
Pursuit of Quackiness: Give the rubber ducky to Gillis.
Life of the Party: Accept the kiss from Jerafina.
Heartbreaker: Turn down Jerafina’s offer of a kiss.
Teeth: Reach Dr. Habit’s office and listen to his plan.
The way back home: Escape the Habitat.
Residual Melancholy: Leave unfinished business; see Ending #2 above.
Smile for You: Take the violent route; see Ending #1 above.
Flower Friend: Make amends; see Ending #3 above.
Written by Dr. Habinch