| 1. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 8 ] | 113,392 | Walkthrough | Portal 2
|
| 2. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 6 ] | 108,269 | Walkthrough | Portal 2
|
| 3. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 7 ] | 51,903 | Walkthrough | Portal 2
|
| 4. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 8 ] | 37,861 | Walkthrough | Portal 2
|
| 5. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 2 ] | 37,272 | Walkthrough | Portal 2
|
| 6. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 7 ] | 33,682 | Walkthrough | Portal 2
|
| 7. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 2 ] | 30,699 | Walkthrough | Portal 2
|
| 8. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 5 ] | 28,407 | Walkthrough | Portal 2
|
| 9. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 8 ] | 27,276 | Walkthrough | Portal 2
|
| 10. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 8 ] | 25,188 | Walkthrough | Portal 2
|
| 11. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 5 ] | 22,128 | Walkthrough | Portal 2
|
| 12. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 9 ] | 16,815 | Walkthrough | Portal 2
|
| 13. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 6 ] | 14,670 | Walkthrough | Portal 2
|
| 14. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 3 ] | 13,957 | Walkthrough | Portal 2
|
| 15. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 6 ] | 12,480 | Walkthrough | Portal 2
|
| 16. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 4 ] | 11,990 | Walkthrough | Portal 2
|
| 17. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 3 ] | 11,509 | Walkthrough | Portal 2
|
| 18. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 4 ] | 11,335 | Walkthrough | Portal 2
|
| 19. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 4 ] | 10,034 | Walkthrough | Portal 2
|
| 20. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 7 ] | 9,957 | Walkthrough | Portal 2
|
| 21. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 4 ] | 9,429 | Walkthrough | Portal 2
|
| 22. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 3 ] | 9,277 | Walkthrough | Portal 2
|
| 23. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 5 ] | 8,582 | Walkthrough | Portal 2
|
| 24. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 7 ] | 8,288 | Walkthrough | Portal 2
|
| 25. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 2 ] | 7,574 | Walkthrough | Portal 2
|
| 26. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 1 ] | 7,243 | Walkthrough | Portal 2
|
| 27. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 6 ] | 6,726 | Walkthrough | Portal 2
|
| 28. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 2 ] | 5,355 | Walkthrough | Portal 2
|
| 29. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 3 ] | 4,873 | Walkthrough | Portal 2
|
| 30. | Portal 2 Co-Op Walkthrough - [ Course 2 - Level 1 ] | 4,814 | Walkthrough | Portal 2
|
| 31. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 6 ] | 4,520 | Walkthrough | Portal 2
|
| 32. | Portal 2 Co-Op Walkthrough - [ Course 5 - Level 1 ] | 4,076 | Walkthrough | Portal 2
|
| 33. | Portal 2 Co-Op Walkthrough - [ Course 3 - Level 3 ] | 3,822 | Walkthrough | Portal 2
|
| 34. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 1 ] | 3,818 | Walkthrough | Portal 2
|
| 35. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 2 ] | 2,613 | Walkthrough | Portal 2
|
| 36. | Portal 2 Co-Op Walkthrough - [ Course 4 - Level 5 ] | 2,574 | Walkthrough | Portal 2
|
| 37. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 1 ] | 2,488 | Walkthrough | Portal 2
|
| 38. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 4 ] | 2,455 | Walkthrough | Portal 2
|
| 39. | Portal 2 Co-Op Walkthrough - [ Course 1 - Level 5 ] | 1,542 | Walkthrough | Portal 2
|
