The difference is that in S-f, youŽll have to qonquer Alien Bugs in Drassen Mine if you want to. And there, youŽll fins some bug juice wcich you could pick up with glass jars, and then use it on your armor- IŽtll give VERY good armor, maybe up to 300% if iŽm not totally blown out tonight...
I have never played S-f, becvause i founded it so redicoulus. JA2 is really a realistic game, then why add something like a bug-hive in one of the caves?????