Pilottobombadier has updated his site with another version of Lock and Load featuring a replacement for the Plasma Rifle: a Smart Gun.
The but, however, is that I have not had time to playtest it, but please download it anyways, and tell me what bugs you find if you find any. Also, the DDFs are in the wadfile, so when you play, you'd better remove or delete any ddfs in your Doom directory, or things might get a little wonky.
He has also added descriptions of the enemies to expect in "Aliens Vs. Predators Lock and Load".