The lore of this game is immense (POSSIBLE STORY SPOILERS)

[Pants Chicken]

Jesus christ this lore is just un-real. The surface is just "hee hoo turnip boy did not pay his taxes" but when you dig deeper it gets very dark. This game takes place after a nuclear apocalypse, that's for sure. The radiation managed to mutate plants and give them sentience, and they rose up. Only a few humans survived.
Matt and Liz are the children of the people we see in the bunker, and it's implied that Matt has died in war. Liz is the boss we fight in the bunker, mutated by the radiation.
If any of you want to extend on connecting dots, feel free too in these comments.

[Kiriakulos]

i'm not sure what triggers it, but I once got a ghost to appear when entering the long corridor to the right of the icebox area.
The music stopped, the lights flickered and a ghost showed up moving to the door further right

[kirbykips]

I have suspicions that WE were the cause of Liz's mutation. Annie mentioned after we fought the deer that we were "glowing" and "creating life around us." I think we were basically spreading that radiated gas around and brought it into the bunker. For example, the cans of food will shake and glow the closer you get to them before erupting into mutated food. They were probably completely normal before you showed up. Then you get into the room where Liz's last note and a key are. The key is right next to a dresser and when you grab the key, you can see someone closing the dresser door before the whole dresser starts to glow. I think Liz was in there, hiding, and when you went to pick up the key, you exposed her to the radiation. So you not only killed her, but probably turned her into the monster you fought in the first place.

But....that's just a theory.....

[MoltenGear]

Publicado originalmente por kirbykips:

I have suspicions that WE were the cause of Liz's mutation. Annie mentioned after we fought the deer that we were "glowing" and "creating life around us." I think we were basically spreading that radiated gas around and brought it into the bunker. For example, the cans of food will shake and glow the closer you get to them before erupting into mutated food. They were probably completely normal before you showed up. Then you get into the room where Liz's last note and a key are. The key is right next to a dresser and when you grab the key, you can see someone closing the dresser door before the whole dresser starts to glow. I think Liz was in there, hiding, and when you went to pick up the key, you exposed her to the radiation. So you not only killed her, but probably turned her into the monster you fought in the first place.

But....that's just a theory.....

not even really a theory its litteraly just the answer. it shows rays coming off him and hitting her