My Friends made a movie.

Inspired by the Half-Life Video Game series, Beyond Black Mesa is an action-packed short film centered around Adrian Shephard and of a band of resistance fighters who are struggling to survive in the post-apocalyptic world. When an army of Combine soldiers implement an elaborate plan of attack to rid the rest of those who remain, the resistance must warn the other survivers of the mass invasion, or face the reality of the extinction of the human race