ToME: the Tales of Maj'Eyal

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?

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.

phantomglider wrote: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?

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.