Insanity Incarnate Campaign:
Story: Nazi Zombies in Halo; It has been hundreds of years since the zombie outbreak. It's a surprise humanity is still kicking. On a mission to find rations in an infested city, Jennifer, a marine sergeant, and her team hear a lound booming sound, followed by another. The team looks to the sky to see a Covenant Corvette fleeing a Covenant Battle Cruiser. The Corvette violently explodes, a few Phantom, Spirits, and Drop Pods escaping. This adds on to the problems, as the Unggoy and Kig-Yar quickly start turning, and catching other species off guard. Not only that, but the Covenant doesn't seem to like the fact that humans partnered with heretics.
If you're familiar with the Black Ops "Moon" easter egg, please note that in this universe, Doctor Richtofen controls the zombies in Samantha's body still, but the rockets never fired.
The enemies will have custom third-person animation sets, the Elites' animations will be a mix of Halo: Reach and Halo Wars, the Grunts will have plasma-cannon animations, as well as revamps of originals, Jackals will be right-handed, will have two-handed rifle animations, and a berserk animation.

Also, the Covenant and UNSC models will be Reach's, the infected humans will be custom. Jennifer will be a custom model made to look like Reach.
I am also ajusting existing classes, and adding new ones.
Enemies:
Zombie Human- Nazi, American Soldier, American Marine, UNSC Marine, Civilian, Russian soldier
Zombie Elite- Minor, Major, Officer, Ultra, Zealot, Spec Ops, Stealth
Zombie Grunt- Minor, Major, Ultra, Spec Ops, Stealth
Zombie Jackal- Scout, Assault, Spec Ops, Stealth
Zombie Brute- Minor, Captain, Stalker, Chieftain
Jackal Crawler- Crawling Jackal zombies, steal your weapons
Night Seeker- Standard zombies with glowing eyes
Crawler- Standard CoD crawler
115 Miners- Humans who believe 115 shouldn't be destroyed or removed
Elite- Minor, Major, Officer, Ultra, Zealot, Ranger, Spec Ops,
Magnetic, Commando, Stealth
Brute- Minor, Captain, Jetpack, Stalker, Chieftain
Grunt- Minor, Major, Ultra, Spec Ops, Stealth
Jackal- Scout, Assault, Spec Ops, Stealth
Hunter- Minor, Major, Stealth
We do not have all the tools for this, but my friend is looking into buying 3DS MAX, so he'll be doing the BSPs and animating, most likely. We are going to try our hardest to make this campaign great.
Half-assed topic, ftw.