Proceed down the next passage on the left, and jump over the red laser at the intersection. Either kill with your shotgun or lure them back through the laser mines, then use the health station at the end of the hall if you need it. This passage leads to a lounge, and as soon as you walk past the soda machines, two Vortigaunts will spawn in the checker-tiled room.

In the next passageway, jump over the laser mine and then crouch under the next one. Whenever you see one of these red firedoors, always smash the nearby activation switch unless otherwise noted, as it will block many enemies from coming through. These laser mines explode when the laser is disturbed, so either avoid them or destroy them by shooting the base (black part).ДЄround the corner is a laser mine and a fire door. If you murdered the scientist earlier, you'll still have the trip mine to worry about. Charge up your suit until the HEV charger depletes and use the health station if you want. Next to the large blast door is a health station and the first HEV charger of the game. If you shoot the base of the mine (the part attached to the wall), you can detonate it from a safe distance away. They give off very distinctive blue-green lasers and will explode if this laser is disturbed by anyone or anything. You'll notice several of these laser mines throughout the entire stage. You can prevent him from succumbing to this terrible end by shooting him yourself. The scientist then runs off and directly into a laser mine. You'll immediately see a scientist pleading for the blast door to be open, but the security guard in charge of the door gets dragged away by a zombie before he can grant his request. You cannot avoid all of them, however, so your best bet is to run and find cover.ДЄs soon as the elevator doors open, exit and turn right. These red lasers will trigger nearby security turrets, so avoid them at all costs.

Office complex half life