Last night I finished up Stormveil castle and I think I have literally found everything you can in it. The thing I was talking about a few nights ago after I beat Godrick wasn't what I was thinking it would be. It basically put me in the basement but I thought it was going to get me to the bridge.
Then I found another area I hadn't been to and I am like 90% sure the path wasn't even open prior to beating Godrick, which explains why I didn't see it beforehand. It might have been and I just missed it but I thought I explored everything. Then I made my way across the bridge.
I also ended up exploring the academy a bit more and defeated the first "boss". I also went down to the bottom of the lift area and got killed, but spawned somewhere else on the map afterwards which was like a huge WTF just happened lol. And I'm guessing it's intentional because the same thing that killed me ended up being a boss where I spawned, only there were 2 of them.
The more I play this game the more messed up it is (in a good way) and just makes me wonder how the hell did these guys come up with all of this. Just from the level design, to all the mysteriousness, to how much variety in enemies and weapons there are, like everything. It is just kind of hard to grasp how much is in this game and how much thought went into it.
Even like Stormveil Castle, like when you are on the roofs and one of the towers has an extended area you can jump to and walk around, which leads you to some platforming and a whole new area of the castle. It's just genius and not in your face at all.
Oh and then you have the "hidden" walls that you can hit and they open up paths. Those are kind of messed up lol. I have found 2 of them thus far and both rewarded me with something nice.