A blind man's soul
While the students were stuck in the mist, all of the vampires were fighting for their lives against the bloodsuckers. They had tried their best, using everything they could, and they were thankful that they were even able to last this long.
Countless times they would have died, been too slow, or overpowered if it wasn't for the beast armour. They felt that the other vampires were fools for mocking things that could improve their ability like this, and in the future they may come to regret not using such tools.
However, despite everything, they were still no match and they could tell when they started fighting. Their legs were shaking, as they were coming to terms with accepting their death.