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