Stealth/Invis vs Accuracy

[Squibbly]

Could someone tell me the math regarding how an enemy's stealth/invis affects your chance to hit? What about being blinded?

Furthermore, how should a bulwark/berserker go about dealing with stealth/invis enemies? Feathersteel helps obviously, though it's a pain to switch on and off, and is not guaranteed. Any suggestions other than getting extremely high accuracy by maxing dex/precise strikes/the accuracy-booting generic combat talent?

[phantomglider]

Attacking an enemy you can't see (whether from stealth, invisibility, or blindness) has something like a 2/3 chance of automatically missing before you even get to the accuracy/defense check. The Withering Orbs let you ignore this miss chance, as does having the Perfect Strikes buff. (That's the one that gives +100 to accuracy temporarily, not the sustain that boosts accuracy and crit chance.) Berserkers and Bulwarks should plan to dump at least a couple of points into Perfect Strikes.

[Squibbly]

Attacking an enemy you can't see (whether from stealth, invisibility, or blindness) has something like a 2/3 chance of automatically missing before you even get to the accuracy/defense check. The Withering Orbs let you ignore this miss chance, as does having the Perfect Strikes buff. (That's the one that gives +100 to accuracy temporarily, not the sustain that boosts accuracy and crit chance.) Berserkers and Bulwarks should plan to dump at least a couple of points into Perfect Strikes.

So high accuracy alone can't overcome your inability to see an enemy? Are you sure about this?

[phantomglider]

Yes, I'm sure. The blindfight on Perfect Strikes was added a few betas back; before that it only pumped up your accuracy, and you could still miss stealthy actors.