Survive the game without dying on your first playthrough.
The Steam version of Lifeless Planet includes two achievements that can only be earned on your "first playthrough." Those achievements are as follows:
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Rocketeer: Finish the game in under 4 hours on your first playthrough.
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Survivalist: Survive the game without dying on your first playthrough.
As of this writing: 12.5 percent of players earned the Rocketeer achievement, while only 0.4 percent of players earned the Survivalist achievement.
Developer Stage 2 Studios mentioned this past summer they're considering removing the "first playthrough" requirement from those achievements.
Until that happens, you can delete your your Lifeless Planet save file to trick your game into thinking you're about to start your "first playthrough." You won't lose any achievements you've already earned.
You can find your Lifeless Planet save file in the following location: C:\Users\[User Account]\AppData\LocalLow\Stage 2 Studios\Lifeless Planet\