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