I think some of the panels can only be in one person's personal vision. For example #4 has Tarquin looking lovingly on. I am sure Elan believes that everything can end happily (like that) with Tarquin coming round to the good side. I doubt anyone else does. Similarly #13 (love for Banjo) surely must only exist in Elan's head.

So you might tentatively assign #5, #8 and #12 to Haley (beating two of her demons and gold).

#6 and #9 must be Roy (and possibly #14 - reunion with Durkon?).

Possibly #2 (his death was not in vain) and #7 (people he actually liked or had fun with mourned his death) could even be Belkar's.

The others are more difficult and it may be impossible to assign them like that (and I could be wrong).