Hunter's,Brute's,Big Flood Things and The Grave Mind
Grunts, all Flood, Hunters (if you don't count that big choppy thingy on their arm) and Vehicles.
Halo 4 is called Halo 4.
Enemies love throwing grenades
Basically, enemies have twice the health.
That's what you should be asking. your'e lucky if you get no enemies, because the enemies are on patrol, unlike in other halo games, where the enemies already know you're there. They come with five to seven grunts and a brute or two. best to avoid patrols.
The thing on the angel's head is called a halo.
it makes all enemies more aggressive :)
You can't unless you Mod
Just camp and stay short of range of the enemies....
The manatee has no enemies because how big it is
No, they do not have enemies since they are big animals.
there is it is called halo combat evolved