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.
Equip the full ninja set.
Equip the full space set.
Equip the full paint set.
Try to touch the sky.
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.
Craft every item.
Climb to the tippy top of the antenna.
Make friends with everyone on the island.
Acquire all bracelets, and gain enlightenment.
Ragdoll into something as fast as you can.
Break everything on the island.
Complete the story.
Completed Avery's Quest
Take a seat in the Junk Shop.
Completed Martin's Quest
Completed Jill's Quest
Undertake a new, bigger quest.