he says that he did it in more than one try, if you read the thing after the video link he talks about how some sections took 8 hours. the reason there arent titles on some of the levels is because he exploited some stuff (i.e. pressing buttons through walls.) also, if you notice he had to get back health/energy to match the next segment's health/energy contents. @asinth you need a divX player to watch this, or a DivX codec for Windows Media Player. you can download divX from
Here.
As for the texturing... yeah, horrid in some places, overlapping, misaligned. but hey, this game was ahead of it's time. its almost 7 years old... btw there is a half life 2 speed run in 2 hours 14 minutes. seen
here that lows away your 14 hours.. =P