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