Vinland Saga has already been mentioned, but gets a recommendation nonetheless, even if it is still ongoing. It's quite good.
Aside from that, the only dark fantasy manga I know that arguably mostly matches your criteria is Attack on Titan.
There's also Ubel Blatt, but it's probably not up your alley. Bit too edgy and not what I'd call mature.
But, if samurai drama tickles your fancy too, you can't go wrong with Lone Wolf and Cub. Shigurui and Blade of the Immortal[/i] are also good. And then there's Vagabond, a chronicle of the life of the famous historical swordmaster Miyamoto Musashi. It's ongoing like Berserk and Vinland Saga, but well worth your time regardless.
Similarly, Historie follows the life of a young boy in Ancient Greece who would grow up to become general and secretary to Alexander the Great. Nice if you like a more Swords and Sandals vibe.
Aside from that, the only dark fantasy manga I know that arguably mostly matches your criteria is Attack on Titan.
There's also Ubel Blatt, but it's probably not up your alley. Bit too edgy and not what I'd call mature.
But, if samurai drama tickles your fancy too, you can't go wrong with Lone Wolf and Cub. Shigurui and Blade of the Immortal[/i] are also good. And then there's Vagabond, a chronicle of the life of the famous historical swordmaster Miyamoto Musashi. It's ongoing like Berserk and Vinland Saga, but well worth your time regardless.
Similarly, Historie follows the life of a young boy in Ancient Greece who would grow up to become general and secretary to Alexander the Great. Nice if you like a more Swords and Sandals vibe.