Portal walkthrough - Test Chamber 18 Published 2011-08-24 Download video MP4 360p Download video MP4 720p Recommendations 01:54 Portal walkthrough - Test Chamber 19 13:04 Bringing GLaDOS to life with Robotics and AI 10:52 Portal M4R10 - If Mario was in...Portal 27:54 GLaDOS: A Portal Fan Film 14:49 Top 10 Favorite Portal 2 Community Test Chambers 04:40 Portal - Test Chamber 18 (Walkthrough) 03:05 Portal - 'Still Alive' 25:53 Portal: Still Alive - Test chamber 19, the escape + GLaDOS 02:07 HEYYEYAAEYAAAEYAEYAA 1:05:40 I Fully Completed EVERY Half-Life + Portal Game... 06:08 Portal 1 Walkthrough - Chamber 18 17:16 Game Theory: Can You Solve Portal's IMPOSSIBLE Puzzle? (Portal) 04:42 Canceled Project - Blue Portals 2 00:31 Why The NEW PORTAL GAME Is MASSIVE 56:47 APERTURE TAG - Full Game Walkthrough 【No Deaths】 29:42 АЙСБЕРГ ГУБКА БОБ (частина 2) 05:47 [Road to 100%] Portal - Camera Shy - Achievement Walkthrough (All cameras) 03:01 Portal 2 - breaking all Wheatley's monitors 07:41 Portal walkthrough - Test Chamber 15 (Advanced) 01:00 How Far Do You Fall in Portal 2? Similar videos 09:28 Portal walkthrough - Test Chamber 18 (Advanced) 05:00 Portal - Test Chamber 18 in HD (1080p) 04:06 Portal - Test Chamber 18 [Gameplay Walkthrough] 1080p 60 fps 01:37 Guide: Portal Least Time Challenge (Test Chamber 18) 03:11 Portal Advanced Test Chamber 18 Walkthrough 02:19 Portal walkthrough - Advanced Chamber 18 08:12 Portal Walkthrough: Testchamber 18 10:40 PORTAL Chamber 18 03:41 Portal 2 walkthrough - Chapter 4: The Surprise - Test Chamber 18 00:46 Test Chamber 18 in only 4 portals (using glitches) 06:15 Portal walkthrough - Chapter: 10 Test chamber 18 More results