The phrase "blood vials" refers to small containers that hold a small amount of blood for various purposes, such as medical tests or research. Full definition
The idea to not respawn with blood vials (this game's Estus Flasks) was also not very well thought out, since it forces you to farm through areas countless times when you already didn't like the area the first time. (metacritic.com)
BRAINDEAD blood vials system for easy mode healing, BRAINDEAD retaliation system to regain lost HP by spamming light attack over and over again, no strategy, no fun, just braindead (metacritic.com)
BRAINDEAD blood vials system for easy mode healing, BRAINDEAD retaliation system to regain lost HP by spamming light attack over and over again, no strategy, no fun, just braindead spam. (metacritic.com)