Guide: Portal Least Steps Challenge (Test Chamber 17) Published 2013-03-15 Download video MP4 360p Download video MP4 720p Recommendations 10:26 Portal Challenges: Least Steps 06:47 Guide: Portal Least Steps Challenge (Test Chamber 16) 38:54 How Two People Created Gaming’s Most Complex Simulation System 17:16 Game Theory: Can You Solve Portal's IMPOSSIBLE Puzzle? (Portal) 02:21 Guide: Portal Least Steps Challenge (Test Chamber 18) 12:26 Portal - Transmission Received Achievement Guide 02:22 Hidden dialogue in Portal 2 04:47 Portal: Challenge-map - Chamber 17 (Least Portals) 12:07 Portal 2 - Destroy All of Wheatley's Monitors - Smash TV Achievement Guide 08:36 Portal Challenges: Least Portals 06:11 How a Non-Speedrunner Can Skip Chamber 18 08:53 Aperture Tag Both Endings Tutorial 05:47 [Road to 100%] Portal - Camera Shy - Achievement Walkthrough (All cameras) 02:23 Guide: Portal Least Portals Challenge (Test Chamber 18) 16:08 Portal Glitchless Speedrun in 15:16 (Former World Record) 02:49 Guide: Portal Least Steps Challenge (Test Chamber 15) 02:41 Portal - Chamber 18 (least steps) 17:52 Let's Play Portal - Transmission Received and Camera Shy Achievements - Part 1 03:16 Portal Least Steps Challenge 18 : 10 Steps 05:46 Portal 1: all radios and signals for the "Transmission Received" achievement Similar videos 02:09 Portal - Chamber 17 (least steps) 02:38 Portal Least Steps Challenge 17 : 99 Steps 01:27 Portal Challenge Chamber 17 Least Steps (132) 04:05 Portal | Least Steps for Chamber 17 Gold Medal Guide 06:13 Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 175 Steps) 02:00 Guide: Portal Least Portals Challenge (Test Chamber 17) 01:32 Guide: Portal Least Time Challenge (Test Chamber 17) 02:29 Portal Test Chamber 17 Least Steps Gold Run (149 Steps) 05:11 Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 150 Steps) 04:37 Portal Walkthrough - The Challenge Test Chambers - Test Chamber 17 (Least Steps - 215 Steps) 05:36 Portal: Challenge Maps - Test Chamber 17 Least Steps (Gold Medal) 01:22 Portal - Chamber 17 Least Steps - 0 steps 04:31 Portal - Chamber 17 Least steps challenge 01:43 Portal: Test chamber 17 challenge - least steps - 146 steps 01:10 Portal - Chamber 13 (least steps) 01:17 Portal - Chamber 17 (least portals) More results