In Half-Life: Opposing Force, you play as Adrian Shephard, a U.S. Marine Corporal, who becomes a key player in the events that unfold during the Black Mesa incident. The game takes place concurrently with the events of the original Half-Life, but from a different perspective. Your mission is to survive the alien invasion and uncover the sinister plans of the government.
You can purchase the game digitally or find physical vintage copies: Half-Life- Opposing Force PC Game Free Download Direct Link
If you enjoy Opposing Force , try – you play as Barney the security guard. It’s shorter but adds more backstory. It’s also available on Steam, often bundled for a few dollars. In Half-Life: Opposing Force, you play as Adrian