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.
Ragdoll into something as fast as you can.
Equip the full ninja set.
Break everything on the island.
Make friends with everyone on the island.
Craft every item.
Complete the story.
Completed Avery's Quest
Completed Jill's Quest
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.
Swing with the Sticky Hand 5 times without touching the ground.
Equip the full space set.
Equip the full paint set.
Completed Martin's Quest
Take a seat in the Junk Shop.
Try to touch the sky.
Acquire all bracelets, and gain enlightenment.
Undertake a new, bigger quest.