It would be great if someone could make a mod that adds guns! (If it already exist somewhere please tell me) Also a multiplayer mod would be cool but that would be big! post merged, please do not double post

I would like a mod where it all the textures are replaced with pictures of Rick Astley and all the music is Never Gonna Give You Up. I Would do it myself but I kind of forgot how to mod SHAR. Also here is a link to an old unfinished mod that is very similar. Video Link