When a hero, ally, level 4 monster, or Catacomb Lord is damaged, move down the tracker the corresponding number of blood drops on the damaged character's health track, located on their player board or player card.
Note: When a hero defeats a monster (by reducing its health to "0"), that monster’s disc is placed on top of the hero’s player board. This does not apply when fighting the Catacomb Lord.
If a monster with two health points takes one health point of damage, then it is flipped over in place on the playmat, showing an orange or black background. One more successful hit will destroy the damaged monster. If a monster starts with only one health point, it will immediately die if it takes one point of damage.