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