A fun game but needs some balancing. Music gets repetitive.
Tips for beginners:
Don't send out too many search parties because you loose very often important survivors.
Always aim for the heads!
Your start weapon is quite good, you can replace it by a hunting rifle which is only little improvment.
Mp5, ingram and pistol are quite weak.
AK47 and M4A1 are very good weapons in semi automatic mode (aim for the heads)
SCAR is a bad weapon (too much recoil and not magazine capacity).
Grenade Launcher is far too weak and doesnt help you at all.
Machine gun is the best, but you have to avoid continous fire. Small bursts of 1-2 shots into heads are more effective.