Half-Life Opposing Force: A Forgotten Playthrough @Coincident
Half-Life Opposing Force: A Forgotten Playthrough  @Coincident
Uploaded February 2026 | Updated September 2026, 1 day ago
This is a full game playthrough of Half-Life: Opposing Force, which was released in 1999 by Gearbox Software, and it's an expansion to the first Half-Life game. I haven't played Opposing Force in over 20 years, so it's not exactly a blind playthrough. However, I don't remember much of the game, so it still makes for a fun exploration. In Opposing Force, you are Adrian Shephard; a U.S. Marine sent on a special mission to Black Mesa to neutralize the alien threat and silence all witnesses.

This was played on the "Hard" difficulty setting, on the default goldsrc executable of Opposing Force directly from Steam, without any mods or ports. If you want to try this yourself, remember to put sv_rollangle "0" in steamapps\common\Half-Life\gearbox\userconfig.cfg to disable the sideways camera tilt whenever you strafe.

Opposing Force on Steam: store.steampowered.com/app/50/HalfLife_Opposing_Force
Displacer Cannon self-teleport destinations on the HL wiki: half-life.fandom.com/wiki/Displacer_Cannon

Written, narrated, edited, and performed by Coincident.
No generative AI was used in the making of this content.

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Chapters:
0:00:00 Intro
0:01:17 Boot Camp
0:18:09 Incoming (Chapter 1)
0:20:37 Welcome to Black Mesa (Chapter 2)
0:49:27 "We Are Pulling Out" (Chapter 3)
1:01:43 Missing in Action (Chapter 4)
1:26:55 Friendly Fire (Chapter 5)
1:55:09 We Are Not Alone (Chapter 6)
2:01:30 Crush Depth (Chapter 7)
2:26:12 Vicarious Reality (Chapter 8)
3:04:30 Pit Worm's Nest (Chapter 9)
3:20:29 Foxtrot Uniform (Chapter 10)
4:01:03 "The Package" (Chapter 11)
4:25:19 Worlds Collide (Chapter 12)
4:54:36 Conclusion

Tags:
#halflife #opposingforce #playthrough
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Half-Life Opposing Force: A Forgotten Playthrough

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