| 1. | Architecture of Half-Life 2: #97 The Hospital part 2 | 4 | | Half-Life 2
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| 2. | Architecture of Half-Life 2: #108 Shallow Mineshafts part 1 | 5 | | Half-Life 2
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| 3. | Architecture of Portal #12: Giant Pistons | 5 | | Half-Life 2
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| 4. | Architecture of Half-Life 2: #59 Nova Prospekt, Combine Style part 4 | 5 | | Half-Life 2
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| 5. | Architecture of Half-Life 2: #53 Nova Prospekt part 3 | 5 | | Half-Life 2
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| 6. | Architecture of Half-Life 2: #68 Finding Barney part 2 | 5 | | Half-Life 2
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| 7. | Architecture of Half-Life 2: #109 Shallow Mineshafts part 2 | 5 | | Half-Life 2
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| 8. | Architecture of Half-Life 2: #54 Nova Prospekt part 4 | 6 | | Half-Life 2
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| 9. | Architecture of Half-Life 2: #133 White Forest Strider Defense part 1 | 6 | | Half-Life 2
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| 10. | Architecture of Half-Life 2: #57 Nova Prospekt, Combine Style part 2 | 6 | | Half-Life 2
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| 11. | Architecture of Half-Life 2: #46 Keep Off the Sand part 2 | 6 | | Half-Life 2
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| 12. | Architecture of Half-Life 2: #69 Finding Barney part 3 | 6 | | Half-Life 2
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| 13. | Architecture of Half-Life 2: #127 White Forest Inn part 2 | 6 | | Half-Life 2
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| 14. | Architecture of Half-Life 2: #64 Back in the City part 4 | 6 | | Half-Life 2
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| 15. | Architecture of Half-Life 2: #121 Driven to Fight part 1 | 6 | | Half-Life 2
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| 16. | Architecture of Half-Life 2: #128 White Forest Inn part 3 | 6 | | Half-Life 2
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| 17. | Architecture of Half-Life 2: #124 Keep Your Head Down part 2 | 6 | | Half-Life 2
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| 18. | Architecture of Half-Life 2: #63 Back in the City part 3 | 6 | | Half-Life 2
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| 19. | Architecture of Half-Life 2: #131 Combine in my Launch Tube | 6 | | Half-Life 2
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| 20. | Architecture of Half-Life 2: #65 Back in the City part 5 | 6 | | Half-Life 2
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| 21. | Architecture of Half-Life 2: #129 White Forest Inn part 4 | 6 | | Half-Life 2
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| 22. | Architecture of Half-Life 2: #98 The Hospital part 3 | 7 | | Half-Life 2
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| 23. | Architecture of Half-Life 2: #45 Keep Off the Sand part 1 | 7 | | Half-Life 2
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| 24. | Architecture of Half-Life 2: #39 Driving part 5 | 7 | | Half-Life 2
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| 25. | Architecture of Half-Life 2: #70 Finding Barney part 4 | 7 | | Half-Life 2
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| 26. | Architecture of Half-Life 2: #116 Unidentified Industrial Facility part 2 | 7 | | Half-Life 2
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| 27. | Architecture of Half-Life 2: #26 Ravenholm part 2 | 7 | | Half-Life 2
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| 28. | Architecture of Half-Life 2: #20 Gunboating part 2 | 7 | | Half-Life 2
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| 29. | Architecture of Half-Life 2: #92 Alyx the Sniper part 1 | 7 | | Half-Life 2
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| 30. | Architecture of Half-Life 2: #125 Keep Your Head Down part 3 | 7 | | Half-Life 2
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| 31. | Architecture of Half-Life 2: #85 Back in the Citadel part 1 | 7 | | Half-Life 2
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| 32. | Architecture of Half-Life 2: #104 Antlion Caves part 1 | 7 | | Half-Life 2
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| 33. | Architecture of Half-Life 2: #99 Escort Duty | 8 | | Half-Life 2
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| 34. | Architecture of Half-Life 2: #94 More City 17 part 1 | 8 | | Half-Life 2
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| 35. | Architecture of Half-Life 2: #119 Radio Tower Ambush part 1 | 8 | | Half-Life 2
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| 36. | Architecture of Half-Life 2: #130 Welcome to White Forest | 8 | | Half-Life 2
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| 37. | Architecture of Half-Life 2: #66 Back in the City part 6 | 8 | | Half-Life 2
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| 38. | Architecture of Half-Life 2: #90 Zombines in the Dark part 2 | 8 | | Half-Life 2
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| 39. | Architecture of Half-Life 2: #73 Bank or Museum or Something part 2 | 8 | | Half-Life 2
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| 40. | Architecture of Half-Life 2: #42 On to Lighthouse Point part 1 | 8 | | Half-Life 2
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| 41. | Architecture of Half-Life 2: #58 Nova Prospekt, Combine Style part 3 | 8 | | Half-Life 2
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| 42. | Architecture of Half-Life 2: #67 Finding Barney part 1 | 8 | | Half-Life 2
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| 43. | Architecture of Half-Life 2: #117 Unidentified Industrial Facility part 3 | 8 | | Half-Life 2
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| 44. | Architecture of Half-Life 2: #72 Bank or Museum or Something part 1 | 8 | | Half-Life 2
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| 45. | Architecture of Half-Life 2: #32 A Very Uneventful Mine | 8 | | Half-Life 2
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| 46. | Architecture of Half-Life 2: #78 Striders part 3 | 9 | | Half-Life 2
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| 47. | Architecture of Half-Life 2: #106 Turret Defense: Antlions part 1 | 9 | | Half-Life 2
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| 48. | Architecture of Half-Life 2: #110 Shallow Mineshafts part 3 | 9 | | Half-Life 2
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| 49. | Architecture of Half-Life 2: #75 Bank or Museum or Something part 4 | 9 | | Half-Life 2
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| 50. | Architecture of Half-Life 2: #91 Zombines in the Dark part 3 | 9 | | Half-Life 2
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| 51. | Architecture of Half-Life 2: #16 On a Boat part 5 | 9 | | Half-Life 2
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| 52. | Architecture of Half-Life 2: #123 Keep Your Head Down part 1 | 9 | | Half-Life 2
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| 53. | Architecture of Half-Life 2: #33 Snipers part 1 | 9 | | Half-Life 2
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| 54. | Architecture of Half-Life 2: #61 Back in the City part 1 | 9 | | Half-Life 2
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| 55. | Architecture of Half-Life 2: #84 Begin Episode One | 9 | Show | Half-Life 2
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| 56. | Architecture of Half-Life 2: #95 More City 17 part 2 | 9 | | Half-Life 2
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| 57. | Architecture of Half-Life 2: #96 The Hospital part 1 | 9 | | Half-Life 2
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| 58. | Architecture of Half-Life 2: #47 Keep Off the Sand part 3 | 9 | | Half-Life 2
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| 59. | Architecture of Half-Life 2: #114 Antlion Nest part 4 | 9 | | Half-Life 2
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| 60. | Architecture of Half-Life 2: #40 Driving part 6 | 9 | | Half-Life 2
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| 61. | Architecture of Half-Life 2: #71 Finding Barney part 5 | 9 | | Half-Life 2
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| 62. | Architecture of Half-Life 2: #34 Snipers part 2 | 10 | | Half-Life 2
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| 63. | Architecture of Half-Life 2: #103 Begin Episode Two part 3 | 10 | Show | Half-Life 2
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| 64. | Architecture of Half-Life 2: #107 Turret Defense: Antlions part 2 | 10 | | Half-Life 2
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| 65. | Architecture of Half-Life 2: #93 Alyx the Sniper part 2 | 10 | | Half-Life 2
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| 66. | Architecture of Half-Life 2: #126 White Forest Inn part 1 | 10 | | Half-Life 2
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| 67. | Architecture of Half-Life 2: #44 On to Lighthouse Point part 3 | 10 | | Half-Life 2
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| 68. | Architecture of Half-Life 2: #62 Back in the City part 2 | 10 | | Half-Life 2
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| 69. | Architecture of Half-Life 2: #36 Driving part 2 | 10 | | Half-Life 2
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| 70. | Architecture of Half-Life 2: #60 Nova Prospekt, Combine Style part 5 | 10 | | Half-Life 2
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| 71. | Architecture of Half-Life 2: #122 Driven to Fight part 2 | 10 | | Half-Life 2
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| 72. | Architecture of Half-Life 2: #118 Unidentified Industrial Facility part 4 | 10 | | Half-Life 2
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| 73. | Architecture of Half-Life 2: #113 Antlion Nest part 3 | 10 | | Half-Life 2
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| 74. | Architecture of Half-Life 2: #77 Striders part 2 | 10 | | Half-Life 2
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| 75. | Architecture of Half-Life 2: #38 Driving part 4 | 10 | | Half-Life 2
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| 76. | Architecture of Half-Life 2: #50 Go Team Antlions part 3 | 10 | | Half-Life 2
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| 77. | Architecture of Half-Life 2: #21 Gunboating part 3 | 11 | | Half-Life 2
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| 78. | Architecture of Half-Life 2: #27 Ravenholm part 3 | 11 | | Half-Life 2
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| 79. | Architecture of Half-Life 2: #88 Citadel Core part 2 | 11 | | Half-Life 2
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| 80. | Architecture of Half-Life 2: #74 Bank or Museum or Something part 3 | 11 | | Half-Life 2
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| 81. | Architecture of Half-Life 2: #76 Striders part 1 | 11 | | Half-Life 2
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| 82. | Architecture of Half-Life 2: #105 Antlion Caves part 2 | 11 | | Half-Life 2
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| 83. | Architecture of Half-Life 2: #18 Dodging Bombs part 2 | 11 | | Half-Life 2
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| 84. | Architecture of Half-Life 2: #48 Go Team Antlions part 1 | 11 | | Half-Life 2
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| 85. | Architecture of Half-Life 2: #139 Prisons IRL | 11 | | Half-Life 2
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| 86. | Architecture of Half-Life 2: #83 HL2 Ending and Credits | 11 | | Half-Life 2
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| 87. | Architecture of Half-Life 2: #86 Back in the Citadel part 2 | 12 | | Half-Life 2
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| 88. | Architecture of Half-Life 2: #49 Go Team Antlions part 2 | 12 | | Half-Life 2
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| 89. | Architecture of Half-Life 2: #43 On to Lighthouse Point part 2 | 12 | | Half-Life 2
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| 90. | Architecture of Half-Life 2: #30 Ravenholm part 6 | 12 | | Half-Life 2
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| 91. | Architecture of Half-Life 2: #89 Zombines in the Dark part 1 | 12 | | Half-Life 2
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| 92. | Architecture of Half-Life 2: #41 Under the Bridge | 12 | | Half-Life 2
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| 93. | Architecture of Half-Life 2: #29 Ravenholm part 5 | 12 | | Half-Life 2
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| 94. | Architecture of Half-Life 2: #102 Begin Episode Two part 2 | 12 | Show | Half-Life 2
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| 95. | Architecture of Half-Life 2: #22 Gunboating part 4 | 12 | | Half-Life 2
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| 96. | Architecture of Half-Life 2: #112 Antlion Nest part 2 | 12 | | Half-Life 2
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| 97. | Architecture of Half-Life 2: #82 Final Boss part 2 | 13 | | Half-Life 2
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| 98. | Architecture of Half-Life 2: #25 Ravenholm part 1 | 13 | | Half-Life 2
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| 99. | Architecture of Half-Life 2: #24 Black Mesa East part 2 | 13 | | Half-Life 2
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| 100. | Architecture of Half-Life 2: #134 White Forest Strider Defense part 2 | 13 | | Half-Life 2
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