It's weird that the world ended six, seven years back.

Honestly, it makes a lot of sense though, doesn't it? From 2019, B.P.R.D.: The Devil You Know #13, "Ragna Rok" Written by Mike Mignola and Scott Allie, art by Laurence Campbell.

This was the unlucky 13th issue of the series, but it's really B.P.R.D. #160, and very nearly the end of a storyline that had been running for 25 years at that point! The entire planet was besieged by the monstrous, Lovecraftian kaiju Ogdru Hem--369 of 'em, give or take--and the Bureau had recently lost long-standing members Kate Corrigan and Johann Kraus. (I'm not sure Kate was really dead, although I might be thinking of an earlier story; and Kraus had been a ghost the whole series, so...) With S.H.I.E.L.D.-like aircraft and troops, the B.P.R.D. fights on, trying to get as many people as they can to safety in caves; led by agents Fenix and Howards. Both were later additions: if I recollect, Fenix had a ghost watching her back as she tried to save her friends, but those may both end here; while Howards had been a typical agent until grasping an ancient, and distinctive, sword; he was basically Conan now.

But, three of the B.P.R.D.'s finest were still there, at their darkest hour: the pyrokinetic Liz Sherman, and returning from their own journeys, Abe Sapien and Hellboy. In a nice touch, Hellboy recalls another lost member, Roger the Homunculus, remembering the bigass thing (another of the Ogdru Hem) they killed at Hunte Castle. Hellboy is almost confused, though; since for years he had been told that he was going to be the one to bring about the end of the world, but it seemed to be ending just fine without him.

When a group of humans, including (whatever was left of) Fenix's friends, get to a cave, her ghost Eris takes her leave, saying she was finally free. Howards leaves some agents to hold the entrance against the monstrous 'frogs,' as they push into the caves. Back in New York, Hellboy has a brief talk with the ghost of Edward Grey, who confirms that yeah, this one was going to hurt. Abe calls for Hellboy, as they see Rasputin rising like a kaiju himself in the distance... 

I have a longbox full of Hellboy and related books, including all of B.P.R.D., but I found the last three a couple weeks back in a dollar bin, which was a great chance to revisit the end. There were two issues left, but while there have been numerous Hellboy series since, those have been set in the past; with possibly only Frankenstein set going forward. No spoilers: it's not a completely unhappy ending but it's not without a lot of changes.