At what point, and why, is armour able to stack to sheer 100% damage resistance? Personally I would prefer for it to reach a maximum significantly lower than that, but I don't mind much. The thing I find frustrating is that the game insistently refers to it as stacked armour as though it is not just invincibility. The case example is the fight condition of which I don't remember the exact name, but it states that the enemy starts the match with a stack of five armour for a certain amount of seconds. This is almost misleading as 'armour' in virtually every other gaming context I can think of only ever helps to reduce damage, never negate it completely. That is why, in my first few attempts, I actually attacked at the start of the match thinking my efforts wouldn't be entirely futile, as I thought I would at least be scratching off one or two percent of health. All I'm saying is that presenting something that is quite clearly invulnerability as something else which is traditionally viewed as a mitigator of damage, not a nullifier, can be confusing for new players.