In the Catacombs, there is this room with the purple glowing mushrooms. From there is a stairway going down, leading to a broken path: you can jump all the way to the latest 'isle' and there will be an opening to another corridor. That last jump is difficult; most of the times I failed there. And th...

...at a specific location, namely -and I have no idea whether the spoiler tags will work here- [spoiler]just before or after the corridor on the Shore, that will collapse after you pass it, when you go to the final battle[/spoiler] Maybe it is already therr; the Devs said they had made some adjustme...