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.
Craft every item.
Ragdoll into something as fast as you can.
Learn the monkey's real name.
Instruct the monkey on the power of creativity.
Learn the monkey's TRUE name.
YOU WILL NEVER KNOW THE TRUTH.
Equip the full space set.
Learn the monkey's name.
Climb to the tippy top of the antenna.
Try to touch the sky.
Equip the full paint set.
Break everything on the island.
Make friends with everyone on the island.
Acquire all bracelets, and gain enlightenment.
Complete the story.
Completed Avery's Quest
Completed Jill's Quest
Equip the full ninja set.
Take a seat in the Junk Shop.
Completed Martin's Quest
Undertake a new, bigger quest.