5) The suppressed machine gun from ODST
The M7S Caseless Submachine Gun to be precise. But why am I being so precise? Because it was a cool-ass gun is why. Well, maybe there’s a bit more to it, but it makes the point nicely. You see, ODST was a great game, but crucially, it was a different game. It challenged the norms of conventional Halo, and wasn’t afraid to experiment. Did all those chances pay off? No. But the game was all the better for trying. I mean, a silent gun in a Halo game? Imagine if the new sequel actually had the stealth mechanics to back it up.
On the subject of guns, I think every single person at 343 Industries should be fired on the spot if Halo 5 releases without the ability to dual wield weapons. The delicious, double-cherry goodness that sits atop Halo 2‘s perfection is absolutely not to be ignored – you’re an 8 foot tall space marine for crying out loud. I can’t think of an instance where they wouldn’t be firing two guns at the same time. I mean, maybe not if they were at a wedding or something, but certainly all other times. Make it happen.