So the MC is an idiot that kept the fact that he was actually a DPS and not a healer hidden because he wanted to be part of the party? So he's scum on top of being an idiot this is horrible even by Asian standards which are as low as they go as is.
At this point i wonder if just Alvin killing the elf would dispel the curse she put on him. Maybe carrying her corpse around is preferable? Guaranteed it's revealed later she's the demon kings daughter or something she's pure evil.
His reaction is exactly how i feel about this manga just get it over with. There's no chance in hell he'll ever get revenge on death so this has already become insanely boring to read since it's just torture porn at this point.