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