ARChIVE 2: Aroboros

The technicians desparately tried to close the portal, but they could not! Something was holding it open as Creepers, Zombies, Skeletons, Silverfish, Slimes, Blazes, Ghasts, Magma Cubes, Zombie Pigmen, Endermites and Endermen flooded out of the portal. Zombies and Zombie Pigmen devoured all in their path. Creepers took down buildings. Silverfish and Endermites were smuggled among luggage as the humans attempted to flee. Blazes attacked wooden structures. Ghasts took down planes. The fallout and radiation changed them, made them stronger, improved their killing abilities, Creepers became charged. Ghasts grew far larger. Silverfish grew to the size of airliners and burrowed through the ground. Endermen teleported across the planet, bringing mobs. It seemed there was a super-intelligent entity controlling them all from behind the scenes.

Luckily, conventional human weapons worked here. Pockets of humans resisted the onslaught, killing all they could. In one such society, it was an entire city resisting the onslaught.

(This is more like a summary of what happens between Archive 1 and 3!)