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