That sounds fantastically fun! Thanks so much for the details, man =D I really, truly can't wait to play; there's something about Doom engine and its mods (especially if they look as clean and professional as yours) that tickles that fps itch that other modern games don't quite get at (with maybe a few exceptions).
Just out of curiosity, "..and the BFG fires out a lightning bolt muzzle flash.." I had a lot of trouble simulating a bolt effect myself (admittedly, I'm very very new to doing any doom engine modifications, basically am in the toe-dipping honeymoon phase hehe), is there an easy way to do it, or did you guys have to do some rigging to make it work? The most I found searching it is the railgun, but the particles just don't simulate it well enough and I don't think a sprite would work without stretching or squishing it at distances. Hate to pester you, so don't worry about answering if it's something that's too detailed and/or complicated, I can just keep working at it with google and trying to find mods that attempt to create it to learn from.
Thanks again!