Añade un argumento en tu idiomaStep into the HEV Suits of Black Mesa scientists Gina Cross and Colette Green as they assist Richard Keller in reversing the damage caused by the Resonance Cascade.Step into the HEV Suits of Black Mesa scientists Gina Cross and Colette Green as they assist Richard Keller in reversing the damage caused by the Resonance Cascade.Step into the HEV Suits of Black Mesa scientists Gina Cross and Colette Green as they assist Richard Keller in reversing the damage caused by the Resonance Cascade.