Here is the full list of all 24 Superflight achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Explore 100 maps.
Explore 50 maps.
Explore 25 maps.
Crash 300 times.
Inverting the steering axis? Seriously, that's just wrong.
Gain 40.000 points in a single run.
Gain 20.000 points in a single run.
Gain all three praises in a single run.
Enter the zen mode.
Crash 150 times.
Complete a 10.000 points combo.
Travel through a portal.
Reach the end of a map.
Gain 10.000 points in a single run.
Complete a 5.000 points combo.
Loose 10.000 points in a crash.
Gain the "Godlike!" praise.
Enter a seed and create a map.
Crash 50 times.
Gain 5.000 points in a single run.
Complete a 1.000 points combo.
Gain the "Awesome!" praise.
Complete your first run in Superflight.
Gain the "So Close!" praise.