okay, so to clarify......
first off, sorry i forgot about the soul mass shattering as it does and will correct for that.

as for the arrows, i now realize i wasn't clear with it but the explosion they do is closer what you'd see from a fire cracker. if it hits a normal person in the hand they're never using it again but if it hits something more than 5 inches away the worst you'll get is a little red from the heat. they're more for doing a fairly large amount of sudden damage to a relatively small area

another thing i didn't make clear enough was that the energy weapons formed become solid matter for as long as they're in use, so the arrows are as solid as a normal arrow is after they're fired.
(i'll fix those up in my cs)

as for both knowing that the cloaked fighter was there and the one arrow aimed at two people, first he see's the scents in the air like colored smoke. so something suddenly moving through the cloud that would be forming around the undead nasty since he hasn't really moved around would catch his attention. 
and the simple explanation for the arrow is it was originally going to be for one target, but i changed it to two targets but forgot to change it properly. 

hope that cleared up any questions, if i missed anything let me know. i'll edit my post and cs today.