The rules currently only work for the previous version of the demo, and the run by Kusenqa was done in the previous version of the demo. In the current version of the demo, there is a timer that I am almost certain starts once the player goes in to the well near the blacksmith guy, or once the player enters the Dungeons Of Decay, and the timer ends once you press the button at the end of the demo. So I believe that there is no need for timing anything (unless to check to see if the times are correct) since the game already just gives the ending time that you took. Adding on to how I think the previous runs should be removed (the one from Kusenqa), It's because a number of things have changed to actually make the game go on for longer. For example, the Scoria Waterways being added, and there being no elevator anymore.
Also, in the newer version of the demo, there are now slots that you can save on or load.