This was way too long, but I'm five starring it for learning that Double Dragon was a sort of sequel to Renegade. I also had Renegade for NES and I assumed it was a knock off. All I really remember about it was that it was unnecessarily hard, it had no plot that was ever explained, and you had to fight a huge woman named Kim many times.
I never finished it, so I don't know if it had a final boss with a machine gun like DD.
Mastertronic published a baseball game for the C64 even though the programmer had no idea how baseball was played. The little umpire hollered "valid" instead of "strike" and there were cheerleaders between innings.