Portal 2 Walkthrough (3 hours, all-in-one)

Chapters:
Chapter 1 - THE COURTESY CALL - 1:10
Chapter 2 - THE COLD BOOT - 25:54
Chapter 3 - THE RETURN - 37:50
Chapter 4 - THE SURPRISE - 53:13
Chapter 5 - THE ESCAPE - 62:56 (1:02:56)
Chapter 6 - THE FALL - 89:09 (1:29:09)
Chapter 7 - THE REUNION - 114:44 (1:54:44)
Chapter 8 - THE ITCH - 135:50 (2:15:50)
Chapter 9 - THIS IS THE PART WHERE HE KILLS YOU - 163:10 (2:43:10)
Achievements :
Wake Up Call - 5:31
You Monster - 22:04
Undiscouraged - 26:40
Pturretdactyl, Final Transmission, Drop Box - 31:25
Preservation of Mass - 35:00
Overclocker - 40:14
Bridge over Troubling Water - 41:47
SaBOTour, Good Listener - 59:48
No Hard Feelings - 67:09 (1:07:09)
Scanned Alone - 70:20 (1:10:20)
Stalemate Associate - 81:31 (1:21:31)
Door Prize - 93:32 (1:33:32, Doors 1&2), 109:40 (1:49:40, Door 3-5)
Vertically Unchallenged - 102:33 (1:42:33)
Schrodinger's Catch - 106:52 (1:46:52)
Ship Overboard, Tater Tote - 109:40 (1:49:40)
Portrait Of a Lady - 116:49 (1:56:49)
Stranger Than Friction - 118:50 (1:58:50)
White Out - 124:20 (2:04:20)
You Made Your Point & Dual Pit Experiment - 138:32 (2:18:32)
Smash TV - 140:26 (2:20:26)
Tunnel of Funnel - 156:50 (2:36:50)
The Part Where He Kills You, Pit Boss - 163:10 (2:43:10)
Lunacy - 179:13 (02:59:13)