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.
Explore 50 maps.
Inverting the steering axis? Seriously, that's just wrong.
Enter the zen mode.
Gain 40.000 points in a single run.
Explore 25 maps.
Crash 300 times.
Crash 150 times.
Reach the end of a map.
Complete a 10.000 points combo.
Gain 10.000 points in a single run.
Gain 20.000 points in a single run.
Complete a 5.000 points combo.
Crash 50 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.
Gain the "So Close!" praise.
Gain 5.000 points in a single run.
Gain the "Awesome!" praise.
Travel through a portal.
Complete your first run in Superflight.
Complete a 1.000 points combo.