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