Portal walkthrough - Test Chamber 18 (Advanced) Published 2011-09-28 Download video MP4 360p Download video MP4 720p Recommendations 01:54 Portal walkthrough - Test Chamber 19 31:33 The Oldest Unsolved Problem in Math 13:04 Bringing GLaDOS to life with Robotics and AI 17:32 Valve's "Secret Weapon" 22:19 When Optimisations Work, But for the Wrong Reasons 33:45 Why It Was Almost Impossible to Make the Blue LED 19:10 Portal 2 - The Moron Theory 17:16 Game Theory: Can You Solve Portal's IMPOSSIBLE Puzzle? (Portal) 16:14 Portal Prelude ending with Portal 2 GLaDOS mod 11:21 Is Portal 1 or Portal 2 better? 05:39 Portal walkthrough - Test Chamber 16 (Advanced) 01:58 GLaDOS Meets HAL 9000 1:05:40 I Fully Completed EVERY Half-Life + Portal Game... 04:47 Portal: Challenge-map - Chamber 17 (Least Portals) 09:33 How Speedrunners Skip "The Part Where He Kills You" 02:59 Portal 2 - How to grab Wheatley when you're not supposed to 10:53 Portal 2 moments of all time 04:20 Portal 2 - GLaDOS wakes up in co-op 05:47 [Road to 100%] Portal - Camera Shy - Achievement Walkthrough (All cameras) 04:15 Portal 2 - Going Home Similar videos 02:19 Portal walkthrough - Advanced Chamber 18 10:03 Portal walkthrough - Test Chamber 18 00:29 Portal - Advanced Chamber 18 - Speedrun Route 11:36 Portal Advanced Chambers Walkthrough 04:37 Portal Advanced Chamber 18 Tutorial 07:41 Portal walkthrough - Test Chamber 15 (Advanced) 02:16 Portal - Bonus Maps - Test Chamber 18 (Advanced) 03:45 Portal Test Chamber 18 (Advanced map) 02:06 Portal Advanced Test Chamber 18, The Easy Way 03:11 Portal Advanced Test Chamber 18 Walkthrough 06:14 Portal - Advanced Chamber 18 done with 0 Portals 03:46 Test Chamber 18 Advanced Walkthrough 02:29 Portal - Chamber 18 (least portals) 02:25 Portal Bonus Map: Test Chamber 18 Advanced Walkthrough 04:40 Portal - Test Chamber 18 (Walkthrough) 05:36 Portal: Advanced Map 6/6 (Test Chamber 18) 04:14 Portal Test Chamber 18 Advanced 03:48 Portal - Test Chamber 18: Advanced WALKTHROUGH More results