I'm not entirely sure as I haven't read it specifically. But generally, Doom - related stories often involve a post - apocalyptic world, intense combat, and battles against demonic or otherworldly forces. Maybe 'knee deep in the dead' in the title implies being deeply immersed in a situation full of danger and death.
A 'passenger novel' is likely a novel centered around the concept of passengers. It may explore different themes related to being a passenger. It could show the diverse backgrounds of passengers and how they cope with the situation of being in transit. It might also delve into the psychological states of passengers, such as their hopes, fears and expectations during the journey.
I recommend "The Cute Wife: The Husband Will Be Arrested" to you. The male protagonist of this novel is very domineering. He cares a lot about his car and the front passenger seat. Only the person he likes can sit in the front passenger seat. At first, the female lead also sat in the back seat, but in the end, she captured the male lead's heart and sat in the front passenger seat. I hope you like this fairy's recommendation. Muah ~😗
There were many possible reasons for knee pain. One of the common reasons was excessive exercise, especially for people who didn't exercise often. Overweight would also increase the burden on the knees, causing pain. Other possible causes include arthrosis, patellofemoral pain syndrome (PfPS), as well as knee injury and inflammation. If the knee pain only appears when going up the stairs, it may be related to arthrosis or arthrosis. In order to relieve knee pain, you can try some self-care measures, such as rest, ice, medicine, and appropriate exercise. If the pain continues or gets worse, it is recommended to consult a doctor for more detailed diagnosis and treatment suggestions.
The 'passenger novel' could potentially revolve around a character who is a passenger in different aspects of life. Maybe it's about a person traveling through various places, facing different situations, and how these experiences shape them. It could also explore themes like loneliness, adventure, or the search for meaning while being on the move.