No, you do not mix AR and game genie but there is a distinct absence of anything Gameboy camera/printer attachment so it’s clearly incomplete. I’d also suggest the attachment reading lamp, but I think if that magnifying attachment comes with a light that works, too. Not sure if that particular one does, though.
I know you’re joking but thanks to the Internet, I can confirm you do get the shotgun in the lost valley stage where dinosaurs are found. Now that I read up on it, the funniest part to me is that this meme might have actually chose a shotgun for that reason, especially since apparently you can totally take on a T-Rex with a shotgun.