Honestly, I haven't been this entertained by a game in a while. The first hours are amazing. Just the intensity of it all, trying to survive, sneak past zombies, finding your first gun, etc. After that I hit a "OMG I DON'T WANNA DIE" phase, where I found a good rifle and didn't wanna lose it. I of course ran into a sniper and died. After a bit of that, I just realized the game is A LOT more enjoyable if you just do not care about dying. It's going to happen, no doubt. I have died countless times.
However, I joined this server last night and came across a random group of people and it made it infinitely better. I'd definitely recommend trying to get some friends. Makes it a lot more fun.