Is there a hotkey for stealth I've yet to locate or is agro line of sight and my lag just isn't letting me see them charge in?
No, there's no hotkey for stealth. Special key "Q" is used for special items later on in the game. Line of sight is about 6 tiles in front of an enemy (unless in dark areas). Once you're spotted, an enemy will run towards you and if they touch you, an encounter will happen. If you can't see the enemy charge at you, then it's most likely lag on your part.
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