http://planetquake.com/sda/other/mgstts.html
This is pretty cool to me. No saves, GOID (game over if discovered) on. Big Boss rank in 1:10.
The time has been beaten, but as far as I know the only people who have beaten it did not have GOID turned on. There's a trick with GOID off that lets you save time. If you throw a chaff grenade apparently if a guard discovers you it does not count towards your total discoveries. However with GOID on it's game over at that spot. So there's a few shortcuts you can take with it off, making this run more impressive.