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.
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.
Crash 150 times.
Complete a 10.000 points combo.
Gain the "Godlike!" praise.
Gain all three praises in a single run.
Crash 50 times.
Gain 20.000 points in a single run.
Enter a seed and create a map.
Reach the end of a map.
Travel through a portal.
Loose 10.000 points in a crash.
Gain 10.000 points in a single run.
Complete a 5.000 points combo.
Gain 5.000 points in a single run.
Gain the "Awesome!" praise.
Complete a 1.000 points combo.
Gain the "So Close!" praise.
Complete your first run in Superflight.