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