Can you beat S.T.A.L.K.E.R. Shadow of Chernobyl with only unique items?

GSC Game World had big ambitions for S.T.A.L.K.E.R. Shadow of Chernobyl, and thus created a whole slew of awesome stuff for us to play with, though the repair/upgrade system didn't make it until the prequel/sequel, giving these unique items nearly limited uses. Can you beat Shadow of Chernobyl using only unique items?