Here is the full list of all 19 FlyN achievements.
Buy all the illustrations.
Complete all the bonus levels.
Complete the Electri's bonus levels.
Complete the Trilab's bonus levels.
Stop the Garbage Collector
Stick for 1 hour.
Stop the Telescreen.
Dash 1,500 times.
Bounce 5,000 times.
Complete the Tripatio's bonus levels.
Stop the Portapotree.
Die more than 50 times in a single level, then complete it.
Stop the MX_Tripator.
Glide for 10 minutes.
Complete the Tricoton's bonus levels.
Return to the checkpoint 50 times.
Stop the MX_Tricotor.
Buy an illustration.
Sing for 2 minutes.