In Arventia, there were two main types of damage.
Physical damage. As the name suggested, swinging a normal sword or firing a normal arrow inflicted physical damage. The final number depended on how high the attacker's physical attack stat was, reduced by the enemy's physical defense.
Magical damage. The same principle applied here. It scaled with the caster's magical attack stat, reduced by the target's magical defense.
But there were also rarer, more dangerous forms of damage. For example: soul damage, which directly scarred a person's very essence; poison or burning damage, which slowly ate away at life through damage over time (DOT); and in this case—pure damage.
Pure damage was perhaps the rarest and most terrifying type of all. Why? Because it carried one property that broke every rule of battle:
DEF IGNORE.