Here is the full list of all 36 A Buttload of Free Games achievements.
Play Geckles's Ghosts.
Play Hungry Frog 2.
Play Place Place.
Play Plünge.
Play Real-Time Gardener.
Play The Scarlet Cypress Hotel.
Play Scream Sport.
Play SOUP.
Play Spicy Mansion.
Play Sqaranch!
Play Super Slime Slasher Ultra.
Play Tooting in the Rain.
Play You Can't See Everything at Once+.
Play When Life Gives You Lemons.
Play Two Sides.
Play The Flame.
Play Rootin' Tootin' & No Shootin'.
Play Rogue_Paint.
Play Procrabstination.
Play |\\/|0|\\|5+3|2.exe.
Play Miracle Cure.
Play Intergalactic Interpreter.
Play Hunk Hustler.
Play FEED ME APPLE.
Play FPS TRUE LOVE.
Play FataliTea.
Play Fancy Trash.
Play Falling in Love.
Play Do the Business.
Play Demons.
Play Dark Roads.
Play Bird Bakery.
Play Whodini.
Play Ben VS Anime.
Play 10 Second Painter.
Play A Clownfetti Catastrophe.