Glickman, Gatehouse, Gabriel (spoiler)
A professional as experienced and thorough as Glickman (is portrayed as) would have known that a head shot is what is required to finish off a nemesis like Gatehouse. Nothing less!
Gatehouse - You don't suffer 2 gunshot wounds, one under the left rib cage (vital organ city!), then a few days later wrestle and overcome a somewhat capable assassin, while you are supposed to be unconscious, sedated, or both, and then simply walk-out of the hospital (in your pj's!)
Gabriel portrayed as perceptive and highly intelligent, yet, out-maneuvered and played at nearly every turn of the story.
A decent watch overall, but way too many character profile inconsistencies that left me shaking my head.