Culmination

You are trying to escape from the bunker. What for? How did you get here? The last thing you remember is fear. It's more than just fear. What you felt cannot be described in any other way than the cutting terror… The virus has entered its culminating stage, former patients have mutated, become bigger, faster, stronger, and you cannot think about it without shuddering… They have become smarter… The creature - patient zero, it evolved faster than the rest, it is running after you, feeling fear pheromones, or is it something else that attracts it? No time to think - run! Run to the steel hermetic door, there is an exit behind it!