I remember playing this game years ago. Couldn't beat it back then, did so now. The annoying part about that was that it felt like it was just about luck if you make it through the first few nights. I had to keep restarting the game because I simply couldn't make it through the nights as they progressed since I couldn't find any survivors, and less survivors means more time spent on repairing the fucking wall and using a couple of hours at most for searching weapons and people.
Good thing I got lucky after a few restarts, found like 3 survivors over the course of 4 nights or so with only a few hours of searching, which instantly made the game much easier, considering I could now just search for weapons and more people instead of repairs all the time. So it's kinda like reversed difficulty, hard as shit on the beginning, easy as hell in the end. Not a huge fan of that.
Oh, I almost forgot to mention, some of the restarts were because of the annoying glitch which caused my weapons to stop working if I reloaded it manually. The problem never appeared when I just emptied the clips and it reloaded automatically, but it's basically a beginner's trap.
The weapon selection was okay, but after you get the uzi and the chainsaw, the rest are completely irrelevant. Using the Barrett was fun for the last night, but beyond that, I didn't even bother using the other weapons for more than 2 nights at most. The uzi and the chainsaw is all you need.
TL;DR - A bit too much luck-based, the difficulty is kinda messed up since it goes from hard to easy over the course of the game, manual reloading can stop weapons from working and ok amount of weapons.