Largest amount of Souls...errr...Blood Echoes you have lost.

I lost 250k+ in a chalice dungeon because I forgot to warp back and spend it on healing, but at that point I didn't really care.

I lost 10k in the first few hours before the Cleric Beast, because of a stupid mistake, that one sucked!

I lost about 80k in the Hemwick area, attempted to run back to where i died then forgot all about the stupid trap that sends a giant log down from some trees when you step on it.. I was so dissapointed with myself, anyway blood echoes come quickly, especially in the later areas of the game so at a point i just stopped caring about dying because i didn't really need it for anything other than blood vials when i was running low.

Over 50k in Cainhurst castle. I wasn't even far from a lamp. I got greedy. That was at least 2 full levels, at the time.

Lost 100k in Nightmare of Mensis thanks to the Frenzy guys on the way to the Blood Rock.

Just lost somewhere over 300k at Cainhurst Castle while making the boss run back to Martyr Logarius.

300K just now. One of those "oops, wrong gun equipped!" moments.

Did not hurt as much as 60K though, at a time when that would have been enough for about 3 levels.

Worst "levels" type loss was my very first loss of the game. Lost over 9K fighting Father Gascoigne when I still couldn't figure out how the bloodstain/posession stuff worked in the first few hours of the game. Lost every soul I had earned to that point and had not leveled up yet. Would have been enough for at least 10 levels at that stage.

I lost around 200K cuz I'm a moron >.>. Lost it by dying then and I res'ed I fell down to my death. =/

around 300k in hypogean gal.

+/-8 700 000 blood echoes