Gave it a 7. The first act had enough rough patches through the editing process that I couldn't see myself going higher... even if I did understand and enjoy all the D&D and Faerun references to trigger my pleasure sensors.
But once the paladin shows up in the 2nd act though (best character in the movie IMO), the film kicks into high gear and it's really a lot of fun from that point.
(One thing I'll say is that the opening scene and flashbacks of this film in Icewind Dale trying to get the backstory taken care of really drives home just how utterly successful Peter Jackson was with the opening prologue of The Fellowship of the Ring. That prologue with Blanchett did so much in such a short amount of time to set up the film that I can't help but compare any other movie to it that tries to do the same thing. And unfortunately, the "prologue" of Honor Among Thieves just didn't have the momentum to kickstart the film nearly as well which is part of the reason the first act felt clunky to me.)