Stick at nothing
Back in the day, there was such a thing as stick-man kung fu - this is the best link I can find - which was awesome.
Now someone has done a game called "One Finger Death Punch" in very much the same style. It's a timing-based rhythm action game - think "Guitar Hero" only instead of waves of boring coloured blobs proceeding towards gas burners, there are waves of dudes proceeding towards your fists AND THEIR OWN INEVITABLE DEMISE - in which there are only two buttons, and both of those buttons are "straight-up kill a dude with your bare hands".
Although sometimes there are swords, and throwing knives, and some sort of death football. The Xbox version has had a good review from Eurogamer, and the demo is fairly generous.
Demo hyah, Steam Greenlight page hyah.
Hyah!