Marvel: I Can't Die, What Should I Do?

Traveling to the world of Marvel? What the hell? The system asked me to seek death? "Apocalypse, don't leave... If you don't kill me today, don't even think about sleeping!" "Sister Widow, you must kill me, otherwise I will kill you!" "Stark, where are you shooting? Shoot the vital part!" "Thanos, can you please snap your fingers a few more times? I really want to die. I've lived enough. I'm so tired!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.