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  1. level 18 help
  2. chamber 19 help
  3. Stuck on Level 19 (Minor Spoilers)
  4. Chamber 18: Advanced - Can anyone help? (spoilers)
  5. Chamber 19 ending help (may be spoiler present)
  6. chamber 19 turret room
  7. Need help pls, im stuck ?? (spoilers??)
  8. ChallengeRoom 17
  9. Stuck in 19
  10. How do you beat GLaDOS?
  11. Stuck on the last bit
  12. Any tips on chamber 15?
  13. Stuck on chamber 18
  14. level 19, above the fire
  15. STUCK! Please help! (spoilers)
  16. testchmb_a_13
  17. need help, the part after the thing with rockets (screenshot inside)
  18. stuck in chamber 19 (room with a lot of pipes)
  19. Help in Advanced Chamber 15.
  20. Least Portals Challenge Guide 13 and 14
  21. Least Portals Challenge Guide: Chamber 15
  22. Stuck on escaping (after chamber 19) Screenshots included
  23. Level 19 again - i'm stuck here!!!
  24. Challenge maps - Chamber 17
  25. Advanced Chamber 16
  26. stuck on lvl 31
  27. stuck lvl 32
  28. T19 - thing that fires rockets?!
  29. Stuck in room with GlaDos
  30. Stuck in a huge room with horizontal masher/piston things...
  31. Camera Shy Achivement
  32. Confused on if I even finished the game or not...
  33. Level 18 Advanced
  34. GLaDOS doesn't speak
  35. Lvl 19 - Stuck
  36. Anyone got a strategy for #17 Least Steps????
  37. Help with Last Level
  38. Last level (19) - need help
  39. Chamber 18 - Need help!
  40. Level 19 strcuk.. almost end i think
  41. Stuck on Level 19? Look here!
  42. Escape Help! Screen Shots
  43. Stuck in Lv 19 (picture)
  44. Camera shy
  45. Need halp!
  46. all these videos
  47. Halflife2.net Portal Walkthru Videos - by The Brick
  48. Help!!!!
  49. White screen loading portal
  50. Portal startup
  51. Horrible framerate at main menu in portal
  52. finishing up on half life 2
  53. HELP! I think it might be a MAJOR glitch...>.<
  54. Portal Level 11 Help
  55. *amazing* Portal speedrun - obviously BIG spoilers
  56. installation problems
  57. Installation without Internet
  58. Installation
  59. Stuck in level 19 Xbox360 - different from PC???
  60. Cheat Codes
  61. Missing 3d pary mod in game list?
  62. So i need help... glitch, my own fault.. i don't know
  63. HL2 Won't Install Vista
  64. HELP! Black screen on ALL Steam games!
  65. HELP again! Black screen on HL, I and II!
  66. Is my problem this obvious?!
  67. Help me!!!