Confirmed working glitch, this work after you took the items in RC caves, and with a high map (over 205% ....)
http://www.youtube.com/watch?v=2dmxreEueX0
http://www.youtube.com/watch?v=Vg5kBJxsu80
http://worldbeyondwalls.free.fr/movies/inf-life-hearts-caves.wmv
The sword doesnt seem to be tied with mournblade, alucard sword will do fine, do like in the video, the 2 slam (one on wall and one on ferry) need to be replicate exactly the same way