When Hauser wants revenge, you're dead already. You just don't know it yet. Hauser is out to kill every member of a Columbian drug organization because they executed his mother & little brothers. So he's a man with a mission, fair enough. The action & killings in this film get pretty hilarious. At one point Hauser locks a bad guy out on the balcony. He sets him on fire and gives him the choice: burn up or jump off the building. Another baddie gets first blown up, then run over by a speedboat (with Hauser at the steering wheel, of course). One more gets hooked up to a helicopter (by Hauser, naturally) and hitches a ride before plunging to his inevitable death. Wonderful! You simply don't mess with the Hauser.
Review of No Safe Haven
