Hmm... His armor looked leatherish, and he had enough health to have a thick red bar over the usual one. And to take a handful of backstabs.
You might be right that it wasn´t a hacking thing, though. After that dude, I went through several PvP encounters with people who had ridiculous builds for that level (e.g., one person killed me with a spell that resembled Dark Beads or whatever), so I´m guessing that was just another one of those.
At level 14, a level 16 red invader is the highest level you'll see. I can't comment on blue invaders because the downward invasion limit has been reduced in the remaster, and I'm not sure what it's been changed to.
Anyway, if they put all of their points into vitality, the maximum HP they could have at level 16 is 938 (without the Mask of the Mother or Tiny Being's Ring) as long as they've started as a Pyromancer, Cleric or Knight, so that's why I think it's more likely to be maxed-out armour.
There are a few leather-type armour sets, so it's difficult to identify what you encountered, but you can see in this scrubby
Oroboro video where he twinks in the Burg that you don't need heavy armour to tank hits from lower level players. He's just wearing headgear and leg armour, and backstabs only take 1/5 of his health. And yeah, they've figured out how to twink with Dark Bead. Feels bad, man.
