1 The start of it all

In this world everything seem to be okay and fine until...well until one scientist goes and fucks everything up. In a lab scientists were creating a new type of mutant species but as they were doing that one of their dangerous species of mutant animlas escaped. In a panic the scientists were running around trying to grab the creature but in the process of doing so one dumb scientist pulled a lever and it opened all the other mutants cages and they escaped too. Some of the scientists were torn to shreds, eaten or just salvaged. One scientist managed to escape it all, and he is the one we will be following throughout this whole apocalyptic scenario. His name is John. He didnt have any kids or a wife so that means he was capable of defending himself. What he had was a shelter...like a bomb shelter. These creatures were probably inhaling people has if its air right now. John couldnt sleep at all, each night he would remember the screams of this co-workers. Yet he questions if he will even make it out alive or if he will be able to find a way to stop these creatures . Instead of just sobbing around John thought that maybe if he studied the creatures he would gather more intel about how they move and what they specifically do. Then he realised that he didnt have a team and that job isnt a lone man job. Who knows what type of people he will meet outside of his bunker? So he kept to himself for a couple of weeks but to him it felt like decades have past. Suddenly he heard a loud bang on his bunker door...who or what could it be?