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