For the last minutes I've been messing around with the clipping of objects, and I've found 2 corners that raise your height

The first one is a small boost on the Light Room, to the left of the stairs, there is a corner with a box and a small one, you can lift about a feet by messing around with it and trying to walk into the corner, better doing it than describing to understand what I'm talking about

And the Second one is bigger, about 2 or 3 feet, it's on the Tiger's Room, on the big gate that you open with the button, there is a corner with some vines, by walking into it slowly you can raise your height noticeably, and crouching may have some affect on it but I'm not sure

This might not mean anything, but who knows Might post a video of it if it's hard to understand