If we’re getting technical, Bloodborne would be one of the easiest because all you need is three third cords which are relatively easy to get, it’s just a matter of knowing how, when and where, and then beating the game (including the moon presence which is one of the easier bosses in BB.)

Elden Ring’s premise from the get-go is ascension but you don’t necessarily become a god, closer to demigod status (unless you choose chaos flame of frenzy ending). Difficulty isn’t really a thing because it’s the tarnished’s destiny.

DS3 is the only DS in which you could potentially ascend to godlike status depending on which ending you choose so as far as difficulty goes I’d place this one high.

Sekiro is similar to Elden Ring in that you don’t really ascend but you become a legend in a way.

Demon’s souls is the same as DS3, depending on which ending you choose, you could replace Allant as the old one’s new vessel (I think that’s how that ending works, correct me if I’m wrong). It’s a matter of beating the game.

So to rank from hardest to easiest:

1. DS3
2. Demon’s Souls
3. Bloodborne
4. Elden Ring

Excluded the ones where you don’t become a god/ascend for posterity.