You don't actually need to wait for anyone save for the intro and those ALREADY assisting you with security clearance. Keep going when someone starts talking to you.You will see who you need to keep via trial and error.
Only save those needed for a mission or to activate a retinal scanner or keypad-locked door. Nuzlocke challenges, saving all the guards, killing all enemies, etc) Switch weapons DURING combat when you need to reload.
Kill minimal enemies (only the ones blocking your way). Do not deviate unless you have found a shortcut. I recommend doing a speedrun on Easy and doing the Training Room before going even more hardcore This way, you know the basics, and the map. I recommend visiting for even more technical help!. You are expected to troubleshoot things such as travel time (-ing), ammo restocking, health replenishing and combat. This guide is for tips and map directions. Especially in Half-Life, speedrunning can be very frustrating. The record time for finishing HL1 was broken in 2013, which inspired Guides for Games to write this guide. Speedrunning can be very rewarding and can add to your reputation, as people constantly set new world records through videogaming, and other face-to-face sports. If you stick to that mind set, you will find time on your side. It is not advertised as a stealth game, so you should try playing something like Thief or Mark of the Ninja to get an idea of what's required. Both of these tricks are exclusive to this engine, and were discovered fairly recently (in 2014).When you play HL1 by speedrunning, it turns from a FPS to an action/stealth game. The tricks that allowed to save the most time were triggerdelaying (also present in Half-Life 1) and a new version of save-buffering. The most notable are bunnyhopping and prop-flying. Old engine has significant movement differences, as well as a long list tricks and glitches now patched. It’s also the same engine used in the run Half-Life 2: Done Quick by the HL2DQ team in 2006 the run Done Quicker aimed to replace. Half-Life 2 Done Quicker is a segmented speedrun of Half-Life 2 in 40 minutes, 49 seconds performed by the SourceRuns team utilizing the original, retail engine released in 2004.