[llamabeast]

Yeah, I don't think heat and unpleasantness can give you a stun attack. Mindless constructs would be unlikely to be fazed by it, but a stun attack would affect them just the same. If you wanted you could give him a heat aura. Doesn't seem thematic for a clockwork assassin to me though.

With AP, and AN, it's worth remembering that ordinary sharp weapons have no armor-piercingness. Magical super-sharp weapons are AP. AN is very rare indeed. In fact I'm pretty sure no creature in the game comes with an AN weapon (apart from mental attacks and so forth).