I knew a guy whose son gave guided tours in Alaska. In the middle of a tour he got charged by a bear. Luckily for him, he always carried a gun. Unluckily for him, while he did manage to shoot it, it didn't give a fuck and ripped him up pretty good. One of the people with him had a gun also and did eventually shoot it enough to save him. If I remember right, he lost use of one of his arms and is either blind in an eye, or close to it.
But... yeah. It's hard for me to imagine someone winning a round of Mortal Kombat with a bear after hearing that story.