If you're talking about Beta 5, that most likely won't happen. Currently Ravenfield is on Steam and recieves quite a lot of updates; so all those weapons you happened to mention could come to the Steam version soon. On the subject of multiplayer or LAN, it's not coming to vanilla Ravenfield, as there are quite a few mods making the game multiplayer compatible and a multiplayer fan game being built by Blip Bloop, EaglePancake, Vel and some other modders of the community.