Combine forces are in the process of constructing a huge robot in an abandoned government fallout shelter outside City 17. The robot, codenamed “Das Roboss”, is the most destructive Combine creation yet. It makes Striders look like daddy long-legs. Your mission is to infiltrate the occupied bunker and find Das Roboss. If you can destroy, steal, or otherwise remove the robot from Combine hands you will be doing City 17, and the world, a great service.