A segmented speedrun of Half-Life 2, utilizing Source Pause Tool, completed in 40:49 by the SourceRuns Team, done in 506 segments on Easy difficulty.
This run was done on an older version of Half-Life 2, more specifically, a build from 2006 that still ran on the original game engine (also known as the Old Engine), before being updated in 2010 to the OrangeBox engine.
Old engine has significant movement differences, as well as a long list tricks and glitches now patched. The most notable are bunnyhopping and prop-flying.
The tricks that allowed us to save the most time were triggerdelaying (also present in Half-Life 1) and our version of save-buffering. Both of these tricks are exclusive to this engine, and were discovered fairly recently (in 2014).
It soon became apparent that using this version would allow us beat the game in a much shorter time than we've ever expected!
00:00 Intro 00:30 Point Insertion 01:49 "A Red Letter Day" 02:27 Route Kanal 03:57 Water Hazard 09:10 Black Mesa East 12:57 "We Don't Go To Ravenholm" 14:34 Highway 17 15:54 Sandtraps 18:07 Nova Prospekt 18:45 Entanglement 25:07 Anticitizen One 27:03 "Follow Freeman!" 28:49 Our Benefactors 32:21 Dark Energy 37:57 The End