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.
Explore 100 maps.
Crash 150 times.
Explore 50 maps.
Inverting the steering axis? Seriously, that's just wrong.
Gain 40.000 points in a single run.
Enter the zen mode.
Explore 25 maps.
Reach the end of a map.
Loose 10.000 points in a crash.
Gain the "Godlike!" praise.
Gain all three praises in a single run.
Crash 50 times.
Gain 20.000 points in a single run.
Complete a 10.000 points combo.
Gain 10.000 points in a single run.
Complete a 5.000 points combo.
Gain 5.000 points in a single run.
Gain the "So Close!" praise.
Travel through a portal.
Enter a seed and create a map.
Gain the "Awesome!" praise.
Complete your first run in Superflight.
Complete a 1.000 points combo.