Great game, but I could never get the 50' ramp to unlock, even after flying over 4000 feet, and hitting critical velocity several times. Whassup with that?
Level 20 is way harder than level 21. That was a letdown. Just seems wrong. Also, for an impossible challenge, it didn't take too long to get the badge.
 "Learn to Fly"){kind=icon}
 "Five Minutes to Kill (Yourself)"){kind=icon}
 "The Great Siege"){kind=icon}
 "Bible Fight"){kind=icon}
 "Kingdom of The Wind"){kind=icon}
 "The Necronomicon"){kind=icon}
 "Pandemic 2"){kind=icon}