Continuity mistake: In the fight with the silver samurai, after Wolverine loses his claws from one hand, he takes a sword. Twice he goes to the ground, and in that shot there is no sword in his hand, then it appears again.
The Wolverine (2013)
Ending / spoiler
Directed by: James Mangold
Starring: Hugh Jackman, Will Yun Lee, Brian Tee, Tao Okamoto
Yukio kills Viper. It's revealed that Yashida is really alive and the one using the "Silver Samurai" armor made of adamantium. He cuts off Wolverine's claws, starts draining his healing factor and he's saved by Mariko, when she throws one of Wolverine's claws at Yashida's head. Logan/Wolverine pushes Yashida down to the rocks below the facility, then has another "conversation" with Jean Grey, says good-bye and that he will always love her. His claws regenerate and are now his original ones made of bone. Mariko inherits control of her grandfather's corporation and bids farewell to Wolverine, before he and Yukio travel to parts unknown. In the post credits scene: two years later, Logan returns to the U.S. And Magneto and Professor X tell him that they need his help because a great, new threat approaches, setting the stage for X-Men: Days of Future Past.
Racer X
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Trivia: SPOILER! There is a mid credits scene that shows Logan going through airport security 2 years after the end of the movie, where he encounters Professor X and Magneto, who recruit him for a new mission that will be in the film X-Men: Days of Future Past.
Question: Was Logan's healing factor completely removed by Viper or just slowed down a lot? In the funeral fight scenes and on the train he was shot and stabbed multiple times, yet he was only slowed down. It seems if the healing factor was at 0% he would have bled to death right after. (Especially after a shotgun blast to the abdomen at point blank range) And is the healing factor back at 100% now even after the grandfather sucked a bunch of it out?
Answer: The healing factor was only reduced. Like you said, had it been removed he would have bled to death and every time he used his claws he would be bleeding from his hands. It is not revealed if it is at full strength at the end of the film, but it is likely it will return to full strength over time.