[quote]Is it gonna be one player? :o[/quote]
1-5
There's a campaign mode with a bunch of expansions like Cainhurst that have their own campaign.
And there's also a procedural mode done through chalice dungeons.
[quote][i]Did I hear board game?[/i][/quote]
Maybe. You would have read it, though.
The Kickstarter has ended now unfortunately, but you can expect it to it retail.
The KS was already well over $300 for the all-in, so expect it to be more than that.
But... Look at all this content!
https://www.kickstarter.com/projects/cmon/bloodborne-the-board-game/description