Which game had the best enemy variety?

I'd say Halo 2 because of the introduction of new covenant species, the scarab, the golden and mega-sentinels, the prophets, and the Flood. Hopefully, we'll have all those in the upcoming Halo games, barring the Flood unless... you know... they're still around. (Which would make sense, considering that other installations could be holding them.

Reach. Reach had all of the covenant and then some.

Either Halo 3, or Halo 4. Halo 3 had Flood Pure Forms, which changed the idea of the Flood from mass spam to actual quality units (despite how rage-inducing the Ranged Forms were on Cortana). And Halo 4 had the Prometheans, which I think was well done, but making them allied with the Covenant later on wasn't a good move. It would have been cool for Halo 4 to have 3-way fights in more than one mission.

I'd have to side with Halo 4 on this one. The Prometheans were really a step in a different direction than previously established.

Note that the Covenant in Halo 4 are merely elitist Remnants who couldn't let go of the OG Covenant's backwards Religion entirely.

Halo 2 without a doubt. Those bionicles in halo 4 were dumb as hell.

I'm... aware of that. One thing I did hate about Halo 4's Covenant was that they made all of the species in it minus the Hunters look like retarded dinosaurs with Down Syndrome.

Hunterdude would say otherwise

Elites were already dinosaurs to begin with. Grunts were supposed to be arthropodic. Jackals... they must be another genus of Jackal because that's in no way bird like. But, I like the raptor look. It just needs to be a skirmisher subtype, though.

But did they have to make them look so retarded though? I really want whatever 343 was smoking in 2012 just so I can think of shit as retarded as that.

Don't you already?

The Jackal model should be applied elsewhere. I wild animal, preferably. The grunt... I don't even.

Halo 4 or Reach

YES!!!

Or make it so they don't side with the Covies until the very end. Why did they make it so they sided with them in the first level you saw them...

One word, Didact.

*Dildact

I see what you did there, lol.