I have never had as many unfair deaths as I have in this game, I always felt I was at a disadvantage and that kind of takes away from what makes these games fun.
I had one that thanks to shadowplay I got recorded it just makes me sad when it happens. Its the things like this that turn the difficulty into a slog rather than a challenge.
https://www.youtube.com/watch?v=e_FGmFiF53Y
To be fair, you've only got yourself to blame for that one. FROM removed invincibility when opening fog doors. You never want to place yourself in a corner against any enemy. Rushing somewhere is a sure-fire way to get killed. I lost 40,000 souls once due to idiotically attempting to bypass simple enemies and getting caught with no stamina.
The worst death I've had was due to PVP lag. Seriously, when PVP works it can be exhilarating but in this case, I back stabbed the dude twice, hit him multiple times, and then we both died instantly as apparently he'd be peppering me with magic missiles which I never saw.
FROM really should disable invasions if the ping gets too high. That stuff is ridiculous. Literally nothing I could do and I lost the souls I was backtracking to get.