Survive In The Bunker 3.5

Waking up at the guard post of the bunker from loud strange sounds and decided to find out where the strange sound was coming from. Following the sounds, I went down further into the bunker. As soon as I entered the danger zone of the bunker, an emergency closing of the doors worked at all the doors and I saw terrible creatures, but I was not afraid of them! I have a faithful shotgun mate! The battle began ...