Here is the full list of all 20 Paper Planes achievements.
Destroy 25 other planes using the twin shot plane.
Destroy 25 other planes using the mine layer plane.
Pick up 15 rapid fire powerups to unlock the twin shot plane.
Destroy 25 other planes using the wizard.
Detonate the nuke in the sky stage 8 times to unlock the mine layer plane.
Destroy 100 planes.
Get shredded by P.E.T.E. 20 times.
Get the sniper powerup while playing with the wizard plane.
Destroy 25 other planes using the default paper plane.
Destroy 25 lightbulbs in the Library stage.
Finish a game with 20% accuracy or better.
Collect 10+ powerups in a single match.
Become a big baby to unlock your inner magical potential.
Finish a game with 2% accuracy or worse.
Die to the ground in the Library stage.
Mute everything.
Watch all the way through the credits without speeding them up.
Go through the How To Play screens.
Mute the music.
Take a moment to observe the beautiful blue sky and majestic flying planes on the main menu.