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