Deadly Days
53 Achievements
GOG
I don't need your help
Survive until night without healing a survivor
51.6%
How to unlock the I don't need your help achievement in Deadly Days - Definitive Guide
Fairly straightforward. I ended up getting this on the first real level after the tutorial as the difficulty is rather low at the beginning stages. Just avoid large swarms of zombies and make sure not to heal (right on the d-pad) any of your survivors before nightfall.
I believe this popped for me in-mission when it reached nighttime.
I believe this popped for me in-mission when it reached nighttime.