Reminds me of DnD Dragons, truly unstoppable badassery. Perseptive may mean they can see through stealth (though its probably critical immunity). In DnD, Dragons can see through stealth and invisibility 'and' are immune to backstabs. Also did anyone see the lightning whip attacks that demon was making? That was pretty kewl. Oh and if we're gonna be making a few sets of armor with different resistances I'm kinda happy it's all in 1 thing. I mean we still get glove/boot customization but I don't have to keep 1 of every damn thing now, since it's lego'ed into a single item.
Anyway, thankfully Dragon's are the one big thing you work towards, not the common enemy. They're supposed to be the hardest thing, and them having high resist to their element makes sense to me. Looking forward to it. 