No worries, it seems Bigg has outlined the achievements I contributed towards as well as most of the multiplayer aspect below, and there may have been a misunderstanding as Bigg did in fact mention me as co-author when he submitted couple of days ago as shown at the top of the forum Guide.
Hello, B A R 4 D! It looks like you were a co-author for Grand Theft Auto V, but unfortunately there was nothing indicated on the submission about that. Is it possible for you or BiggD to give me a quick idea of approximately how much you contributed to it or what areas you worked on or something? I would like to fix this issue so I can give proper credit. Sorry for any trouble this may be causing you!