This achievement requires that you fly 10 minutes without failing or retrying a mission. This would be quite challenging to do naturally. Luckily there is a very easy method to unlock this achievement. It involves abusing the unlimited jetpack fuel in the level Sweet Home 3. Launch and keep flying around Earth for 10 consecutive minutes. Just don't crash, hit the cow, or fall asleep and you can keep flying around indefinitely. The achievement will pop immediately when you reach 10 minutes in this level. It may be best to wait until you are more skilled at the game to try earning this, rather than doing it right away.