S.T.A.L.K.E.R.: Shadow of Chernobyl

One way is to do a bunch of missions for Freedom, the other way is to search
as many stashes and bodies as you find or kill. They're really not much better than
your standard launched grenades and they're not as easy to get. personally I would
suggest getting a Akm assault rifle for starters, then upgrade to a GP assault rifle
then a Vintar BC which you can get by doing a quest mission for Duty and finally a
Svk bullpup or the Dragunov (full length Svk). The regular bullets do just fine, but it's
best if you do headshots.