Are there any restrictions to sneak attacks with long weapons? Or heavy ones? I mean, is it allowed to sneak attack someone with a Heavy Warhammer, for example? Its Range is Near, so I'll get only a -1 to my roll, while attacking with a knife would give me a -2 modifier, since its Range is Arm's Length. Moreover, heavy warhammers inflict 3 damage, while knives inflict only 1. Would an assassin prefer a heavy warhammer to a knife?
Or must I sneak attack in close combat only from Arm's Length Range? A Two-Handed Sword would still inflict more damage than a knife, though...
UPD: Heavy Warhammer's Range is Arm's Length, sorry, looked at the wrong row.