Half-Life: Opposing Force is a First Person Shooter released in October of 1999 by Gearbox Software for the PC. OP follows the Half-Life storyline except that you play as a Marine instead of Gordon. The series continued with Half-Life 2.
Speed Runs
The Speed Demos Archive hosts Opposing Force competition. The current proven World Record for a complete-game OF speedrun on Hard mode is 23 minutes and 9 seconds, achieved by Blake "Spider-Waffle" Piepho on February 12th, 2005.
Speed Run Strategies
- Strats go here!
External Links
- Spider-Waffle's Opposing Force Speedrun (hosted by the SDA)