Black Mesa: Hazard Course mod
Hazard Course mod for Black Mesa Overview Developed by PSR Digital, Hazard Course is an addon for Black Mesa centered around a completely new take on Half-Life's training level, Hazard Course, featuring 6 maps, a wealth of new models and textures, an expanded introduction and outro sequence (based on the sequence exclusive to the PS2 version of Half-Life), and tons of new dialogue from the entire Black Mesa voice cast. Hazard Course is available for the Steam version of Black Mesa. You can download it from Black Mesa's Steam Workshop via the button above. An old version of the mod is availabl...
Source: moddb.com