1. Low-riding Alyx gets you into Dr. Kleiner's lab through a secret passage behind this soda machine.
2. Stop looking there! Dr. Kleiner tells you this is a red letter day - the teleportation device is finally ready to be used.
3. Barney prepares your old HEV suit. After some hi-jinks from the pet head crab, Lamar, the suit is ready. Step onto the platform to don the suit.
4. Dr. Kleiner instructs you to charge the suit at the station on the wall ahead.
5. Follow to the teleportation room. Alyx's teleport fails because the plug falls out of the wall, seen here on the right. Pick up the plug and place it back into the socket. Then, throw the switch to the right of the socket when Kleiner instructs you to.
6. This time the teleportation is successful, and Alyx gives her father (voice acted by Robert Guillaume) a kiss.
7. Next, it's your turn to step onto the teleporter. During the final sequence, Lamar (seen on the left) falls through the ventilation duct and short circuits the equipment.
8. Your teleportation goes horribly wrong, and you are teleported to several different places. For a moment, you are even in Dr. Breen's office.
9. You rematerialize outside the safety of the lab. Drop below and go through this open gate.
10. Climb these stairs and go through another door to load the next zone.
11. Barney tosses you your first weapon - the lowly crowbar. Hey, at least it's something. Use the crowbar to bust the boards blocking the fence opening ahead.
12. Descend the stairs then bust your way past this large crate.
13. Your crowbar is also useful for destroying pesky scanners such as this.
14. Drop to the rail cars below and keep left. Smash the pallet and crates inside this car to get to the opposite door.
15. Hop onto the tracks then run to the right. Move fast because this train is coming at you from the left.
16. Head left once again and climb into this car. Climb the ladder to the right.
17. Jump across the neighboring rail car to the ground ahead.
18. Smash these boards to get to the doorway beyond. Descend the stairs to load the next level.