I don't know if it's still up, but someone uploaded their playthrough of the game. No speedrunning, no cheats, etc. and 5-6 hours was what it came out to.
You know what? I don't even mind. I don't care as long as it's 5 action-packed, engaging hours. Not every game has to be a 100+ hours RPG with more filler than the plaster and putty section of a DIY shop. All I care about is whether or not it's fun at this point.
https://archive.today/499Bc - Article with the 9 hours damage control ("Not dying" is apparently rushing now). And unfortunately, it's not even an action-packed 5 hours; it's a QTE-fest, up to and including the final boss. It's a shame because the setting could be neat, but I guess this is what happens when you go all in for the "cinematic" experience. At least there's still Bloodborne.