fun build suggestion: The Roaring Knight
This is the cosplay build I actually used to beat the game for the first time, not going to suggest hard numbers, more just the general idea I went for since it's been a while since that first run:
Primary attributes: dex/faith
Primary weapons: Sword of Night, Godslayer Greatsword, Hand of Malenia, Godslayer Seal, Black Knife, Maliketh's Black Blade (although I also experimented with some somewhat "off-theme choices for variety's sake, like Godskin Peeler, Euphoria, Wing Stance Milady, Backhand Blades, and the DLC h2h arts)
Primary incantations: black flame/black blade, the rest should be cool, flashy ones for proper aura farming like land of shadow, elden stars, or messmer's orb, probably some lightning ones, maybe howl of shabriri to fit the "roaring" bit
Primary Talismans: Flock's Canvas, shard of Alexander, Rotten Winged Sword Insignia, dealer's choice on the fourth, never really locked down a solid pick for that slot
Recommended armor: shining horned headband + Armor of Night for maximum cosplay fashion (if you want armors that are more practical while still somewhat fitting to the theme, I'd suggest Night's Cavalry, or Armor of Solitude, although always keep the shining horned headband)
Guide I used to make a "blank" face character: https://youtu.be/2OzoMAZpx6o?si=cL16Srouv5PQ-h3s