Guide: Portal Least Portals Challenge (Test Chamber 15) Published 2013-03-15 Download video MP4 360p Download video MP4 720p Similar videos 02:49 Guide: Portal Least Steps Challenge (Test Chamber 15) 01:43 Portal - Chamber 15 (least portals) 01:01 Guide: Portal Least Time Challenge (Test Chamber 15) 08:36 Portal Challenges: Least Portals 01:50 Portal - Chamber 15 (least steps) 01:42 Portal Test Chamber 15: using 14 portals ( least portals ) 10:26 Portal Challenges: Least Steps 02:12 World record! Test Chamber #15 in 6 portals (least portals challenge) 01:51 5 Portals - Chamber 15 Least Portals (Inbounds) 14:02 Portal: Challenge-map - Chamber 15 (Least Portals & Steps & Time) 01:33 Portal: Least Portals Challenge: Chamber 15 00:36 Portal - Chamber 14 (least portals) 03:43 Portal | Least Steps for Chamber 15 Gold Medal Guide 02:06 Portal "Test Chamber 15" least portals (11 portals) 04:12 Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Portals - 23 Portals) 01:24 Portal testchamber 15 least portals challenge 04:32 Portal Walkthrough - The Challenge Test Chambers - Test Chamber 15 (Least Portals - 14 Portals) 02:02 Portal Chamber 15 Challenge Least Portals Gold Medal (14 portals) 05:51 Portal Challenges: Least Time More results