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