I'm confused, what's the definition of a "corridor zone?" Because Heide's diverges into two paths halfway, Harvest Valley has several different paths to different stuff (the cave in the poison mist near the first bonfire, the area left of the second bonfire, the room with the lockstone near the covetous demon), Iron Keep allows you to skip a boss by changing your path, and you can take a completely different path to the boss by changing the levers in the room with the collapsing platforms. In Shaded Woods, the mist area has several things to explore because it's fairly open and you have to find the path, and by the time you reach the first bonfire, you can jump left, right (onto the trunk) or go straight, and then you can go left, straight, or right again.
Much of Dark2's level design reminded me Demon's. I mean sheesh, outside of Tower of Latria, and 5-2, you could describe the game as being full of "corridor zones," if the definition means tight, dungeon crawling areas.