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.
Crash 300 times.
Explore 50 maps.
Explore 25 maps.
Crash 150 times.
Inverting the steering axis? Seriously, that's just wrong.
Gain all three praises in a single run.
Gain the "Godlike!" praise.
Gain 40.000 points in a single run.
Complete a 10.000 points combo.
Crash 50 times.
Gain 20.000 points in a single run.
Gain 10.000 points in a single run.
Complete a 5.000 points combo.
Enter a seed and create a map.
Gain the "So Close!" praise.
Loose 10.000 points in a crash.
Complete a 1.000 points combo.
Gain 5.000 points in a single run.
Reach the end of a map.
Travel through a portal.
Gain the "Awesome!" praise.
Complete your first run in Superflight.
Enter the zen mode.