We lost contact with one of our key groups. You and your team have to go to this point to see what is happening. At first glance seems an easy mission, but let's see what they find on the way.
Use the A/D keys to move to left/right. S key to crouch, W key to jump. Move the mouse to aim, click to shoot. With the E key you can use items, open doors or take objects. The 1-2-3 keys allow you to control the shooting mode; the R key is to reload, L key for laser mode and space bar to switch weapons.