I got stuck in a corner behind two bookcases in the Hunter's dream and I'm considering using the Hunter's mark to get out. Using the Hunter's mark will consume all my blood echoes.
Would I then be able to recover my blood echoes similarly to when you get killed or they will be lost forever?
No, you will not be able to reclaim your Blood Echoes if you use the Hunters Mark. The item description states:
[...] a hunter loses all Blood Echoes [...]
BUT
If you have a Bold Hunter's Mark, you keep your Blood Echoes, but this item is consumed after use.
[...] Without losing Blood Echoes [...]
