Mastering Portal: Advanced Chambers Challenge Unlocked

today i'm working on completing all of portals extras -- Watch live at / spellcrafterstreaming
0:00 intro
0:37 challenge room 13
9:52 challenge chamber 14
18:12 challenge chamber 15
41:58 advanced challenges number 16
54:30 advanced test chamber number 17
1:14 advanced test chamber 18 i do not finish this yet
1:31:39 end