Thor has experienced death in certain comic book arcs. However, comic book universes often have complex and mutable storylines, so his death isn't always the end. Sometimes he's resurrected or his story takes unexpected turns.
In some comic iterations of Infinity War, Thor tragically meets his end. However, comic storylines can vary, and there might be alternate universes or continuities where he survives.
Yes, she did. Her death was a part of the comic book storyline.
Yes, Thor does lose an eye in some comic book storylines.
Yes, in some storylines, Thor does gain weight and become fat.
Yes, Thor has died in some comic storylines, but he often comes back in one way or another.
Yes, Wolverine has died in some comic book storylines.
Quicksilver's fate in the comic books is not always consistent. Sometimes he does die, but this can be subject to retcons or alternate universes within the comic book multiverse.
Yes, in some comic book storylines, Batman has faced near-death experiences or has been written as dying, but often there are plot twists or resurrections.
Yes, Neegan does die in the comic books.