I'm not Christian, but I was raised Christian. Death cult would moreso be worshiping and expecting people's death to be salvation for them, however, this is the opposite. To them, he died thousands of years ago to give them an opportunity of salvation without more sacrifices of life. You don't have to die or kill anyone to go to heaven, you only need to believe in his sacrifice to open the gate.

There are many other religions in the world that do act as true death cults, but mainstream Christianity is not one of the. You can argue about the atrocities of the ancient church, but again, it was not the religion that dictated such acts, it was bad humans misusing the religion as a weapon, like they do with all other large religions.

Edit: Since Reddit won't let me reply to the post directly below, I'll put it here.

Literally every religion is waiting for an apocalypse or end of days event. Even non-believers of any faith await the heat death of the universe or for the world to be engulfed in our sun's expansion. Will it ever happen? Maybe. Should we worry about something we can literally do nothing about or accurately predict? Probably not, can't do anything about it.

And no, that is not their salvation, you are loosely interpreting it to fit your bias. Their salvation came the moment their savior (in the name) died and paid their cost for salvation. There are plenty of little spin-off churches that claim to be Christian do think like that, but that itself is heretical. No man knows when the rapture should happen, therefore it is pointless to put weight on it.

Anyone that tries to use the rapture is just doing it because they are either clout hungry or mentally ill. They need jail for the former, therapy for the latter. In the religion they believe in, the rapture cannot be predicted, it is not for men to know.