Here is the full list of all 22 Lil Gator Game achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Swing with the Sticky Hand 5 times without touching the ground.
Ragdoll into something as fast as you can.
Try to touch the sky.
Climb to the tippy top of the antenna.
YOU WILL NEVER KNOW THE TRUTH.
Learn the monkey's TRUE name.
Instruct the monkey on the power of creativity.
Learn the monkey's real name.
Learn the monkey's name.
Break everything on the island.
Make friends with everyone on the island.
Acquire all bracelets, and gain enlightenment.
Craft every item.
Complete the story.
Equip the full ninja set.
Completed Jill's Quest
Completed Martin's Quest
Take a seat in the Junk Shop.
Completed Avery's Quest
Equip the full space set.
Equip the full paint set.
Undertake a new, bigger quest.