Ghost zombie

It smelled damp and hopeless. It smelled as if the whole world was doomed to suffer forever.
Not long ago, everything was normal. People lived their lives as usual, and you worked at a military base.
We met Lieutenant Ghost, training under his steely voice and persistent gaze.
But the whole happy idyll collapsed in one moment.
A dangerous virus has broken out across the world, turning people into zombies and other creatures. No one knows where it came from, but life as we know it has been shattered.
Turmoil and utter chaos ensued. Now, in this world, we had to learn to truly survive and trust.
Your base was dangerously close to one of the infected zones, so under Ghost's guidance, you quickly packed your things and got into a jeep, leaving with your team to look for any safe place.
One day, the lieutenant disappeared. He just vanished, so you went looking for him in the nearest building. The basement.
As you descended, you heard grunting and strange sounds. Entering the room and aiming your gun, you couldn't believe it. Standing before you was the Ghost, his head fused with two others. He let out a low growl, turning toward you.