| 1. | The one where the world ends | Black Mesa | 68 | | Black Mesa
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| 2. | Radioactive bath | Black Mesa | 60 | | Black Mesa
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| 3. | Death in an elevator | Black Mesa | 57 | | Black Mesa
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| 4. | Copter fight | Black Mesa | 57 | | Black Mesa
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| 5. | Sorta saving scientists | Black Mesa | 57 | | Black Mesa
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| 6. | Welcome to science | Black Mesa | 55 | | Black Mesa
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| 7. | The great barrier leaf | Black Mesa | 54 | | Black Mesa
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| 8. | Commencing disposal | Black Mesa | 51 | | Black Mesa
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| 9. | Blast off!!! | Black Mesa | 50 | | Black Mesa
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| 10. | Conveyor belt calamities | Black Mesa | 49 | | Black Mesa
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| 11. | Utterly infested with zombies | Black Mesa | 45 | | Black Mesa
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| 12. | A shock for Gargantua | Black Mesa | 44 | | Black Mesa
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| 13. | All a bit militant | Black Mesa | 38 | | Black Mesa
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| 14. | Training session | Black Mesa | 38 | | Black Mesa
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| 15. | Stone cold zombies | Black Mesa | 32 | | Black Mesa
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| 16. | Mystery chamber of radiation death | Black Mesa | 32 | | Black Mesa
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| 17. | Ramming Speed | Black Mesa | 32 | | Black Mesa
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| 18. | Underwater barnacles | Black Mesa | 30 | | Black Mesa
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| 19. | To the minefields | Black Mesa | 27 | | Black Mesa
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| 20. | Unethical experiments | Black Mesa | 26 | | Black Mesa
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| 21. | An ominous ammo supply | Black Mesa | 23 | | Black Mesa
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| 22. | A whole lotta lost | Black Mesa | 21 | | Black Mesa
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| 23. | Some form of Cthulhu monster | Black Mesa | 21 | | Black Mesa
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| 24. | How not to avoid lasers | Black Mesa | 21 | | Black Mesa
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| 25. | Conveying emotions | Black Mesa | 20 | | Black Mesa
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| 26. | The road to Xen | Black Mesa | 20 | | Black Mesa
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| 27. | Vat is the problem | Black Mesa | 18 | | Black Mesa
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| 28. | Not sure I deserve that | Black Mesa | 17 | | Black Mesa
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| 29. | Flooding the chambers | Black Mesa | 16 | | Black Mesa
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| 30. | Pumping it harder | Black Mesa | 14 | | Black Mesa
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| 31. | A Xen journey | Black Mesa | 12 | | Black Mesa
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| 32. | Explosive tedium | Black Mesa | 12 | | Black Mesa
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| 33. | The car park of death and dreams | Black Mesa | 11 | | Black Mesa
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| 34. | Deep into her lair | Black Mesa | 11 | | Black Mesa
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| 35. | Death by controller | Black Mesa | 11 | | Black Mesa
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| 36. | Platforming performance problems | Black Mesa | 11 | | Black Mesa
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| 37. | The big bang puzzle| Black Mesa | 9 | | Black Mesa
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| 38. | Annihilating Nihilanth | Black Mesa | 9 | | Black Mesa
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| 39. | The chase scene | Black Mesa | 9 | | Black Mesa
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| 40. | Descent into alien territory | Black Mesa | 7 | | Black Mesa
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| 41. | A very wet delivery | Black Mesa | 7 | | Black Mesa
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| 42. | Out of the frying pan | Black mesa | 7 | | Black Mesa
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| 43. | They have tanks now | Black Mesa | 7 | | Black Mesa
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| 44. | Giant frickin' laser | Black Mesa | 5 | | Black Mesa
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| 45. | The transportation station | Black Mesa | 4 | | Black Mesa
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| 46. | Repeatedly assassinated | Black Mesa | 4 | | Black Mesa
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| 47. | Sniper's nest | Black Mesa | 4 | | Black Mesa
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| 48. | Spider fight!!! | Black Mesa | 3 | | Black Mesa
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| 49. | Introducing Gonarch | Black Mesa | 2 | | Black Mesa
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