This achievement requires you to escape as a survivor.
This is a fairly easy achievement. The first thing you should do is to craft an axe and a pickaxe, then gather 3 of each. Dont craft anything yet as you need to find the power station, its usually really close so shouldnt take more then 3 minutes. After you find it it should ask for 3 Mechanical Scrap or 3 Electronic Scrap. Go ahead and craft 3 of the required reasource and fix the power plant. Then you need to fix the Helipad, the Helipad always requires 3 Electronic Scrap, 3 Mechanical Scrap and 3 Fuel. One bunker should have all necessary items but you can craft them too ( Both scraps want 1 Stone and 1 Wood, and Fuel wants 2 Normal Berries). Once you have all 9 ingredients go find the Helipad which is usually located Southwest of the map. Fix the helipad, make sure someone calls the escape vehicle from the cabin, and board the vehicle. Once in the vehicle you cannot lose.
You can also do the 'Women and Children First' achievement by being the last one to board the vehicle.