Here is the full list of all 18 Little Bug achievements.
Complete the game with one life.
Collect every item for your Lunch Box.
Collect 6 items in your lunchbox.
Collect all items of the bones family.
Collect all items of the stones family.
Collect all items of the mushrooms family.
Collect all items of the artifacts family.
Collect all items of the creatures family.
Collect all items of the plants family.
Collect all items for Ms. Bisbee's Class.
Blow up 50 blue blocks.
Stay airborne for 8 seconds without landing.
Wake up 100 spirits.
Stay airborne for 60 seconds without landing.
Complete the game with out ever exhausting your Beam energy.
Offer your first Lunch Box item to Roadkill.
Complete a play through of the story in under 45 minutes.
Complete All the Bonus Stages