Inside the same research/science facility that another group of survivors had decided to search for people in, another man had his own search. His was very different, though.
He strode through backdoors, armed with a long-handled hammer, dead-set on eliminating every creature inside; all the scientists, all the undead, and anything else that might cause trouble. The 30-year-old remembered this place, and had scars to prove his existance inside, and now with the apocalypse upon the world, it was his time to Purge. Just as the movie was based off of, this was his own never-ending 12 hours of purging, and he was going to use it until he was tired or convinced otherwise.
Almost immediately, he ran into 'trouble.' A duo of the creatures turned at his footsteps, and screeched at him. Moments later, he was about to be tackled by a former white-clad couple, probably sneaking off for private time before finding themselves being eaten and turned.
He dealt with them both with a strong, left-to-right blow that crunched into the side of the man's ribcage, shoving him into his bloody female companion, and sending them both into the wall of the corridor. Another blow crushed the head of the female; the male had recovered and was scrambling across the floor towards the retreating human, spine, ribs, and left arm all out of line.
The next blow splattered the man's head into the ground, the hammer's force driving it through the skull and to the ground, so hard that it made a resounding CRACK! as it smashed into the floor.