<Snipped quote by Squashedquatch>
There are many Tarnished, so you're fine to claim that as your character, although in general 'real' characters are stronger choices than 'custom' characters when it comes to RPing them due to typically having a definite personality, backstory, and upgrade path to draw from. Someone once applied to this RP as the Bloodborne Hunter, but didn't give them any character to speak of, and seemingly got bored of writing for such a blank slate.
That's quite the powerful Elden Ring build! Faith-Arcane-Dex, is it? Putting aside the stats required, that equipment is in an endgame area, so it would take a long time to obtain in Elden Ring, and it'd probably take a long time to obtain all that in this RP, too. After all, everyone's PCs start weak in here, with just one Power and basic equipment, like an Elden Ring starting class--no matter how strong they were before. Common sense would dictate building up to the strongest abilities over time, like taking Fire Breath before Poison Breath before Rotten Breath, for instance, so it would probably be a while before those Powers manifested themselves.
As for equipment, I can't rightfully say where it would appear in the World of Light. We'll just have to take it area by area, looting what we can from the world and from spirits. On the way, you might find equipment from other games to hold you over, or even stuff you like better. At the very least, I can confirm that Deathblight wouldn't work on just Tarnished, since Tarnished represent an infinitesimal minority of the enemies you'll encounter. Most foes would be susceptible, although their resistance to it might vary massively. Whether you'll be able to instant-kill major foes, however, is up in the air. They might have so much Vitality that going for such a strategy would be a fool's errand, or offer risk comparable to the reward.
Sounds cool! I'll be sure to think about story. And hey, if DB fails, I'll just Blood loss the shit out of them with ROB. Reduvia is good too, and it's much less late-game. Maybe the Default knife and buckler to start, then Reduvia, a summon or two, and the Buckler next? Where would I learn how to summon though....hmm.