Opening the Gate

Open the door he was guarding and toss a couple grenades around in a spread. Wait for the explosions to stop and charge into the room. There are two men on the floor and one manning the catwalk on the left. Pick off the survivors and grab more grenades from the ammo box in the room. Also use the health charger to heal any damage. Go up to the other catwalk and open the door. The valve to open the gate is sabotaged, but they forgot about the full physics system. Turn to the right and shoot the explosive barrels to knock out the support lines holding up that stack of steel beams. Then watch your makeshift ram blow the gate apart.

Backtrack to the machine gun position and kill the guards rushing through the door to your position. Then move back to the room with all the armored cars. Throw grenades behind the cars in the first half to kill the first few soldiers. Another Combine is using the machine gun position at the start. Peek out from around the corner and then toss a grenade into his corner to blow him away.

Leave and drop down to your airboat. Then drive through the newly opened the gate to the next area.

Second Canal Run

You certainly will be running. Build up speed and swing along the canal to the left. Watch the armored car on the ridge in front of you. It will start shooting rockets, so I strongly suggest that you keep moving. Try to drive away from the rockets but don’t lose speed. Most of them will just fly over your head if you keep moving. Swing under the gap to the right but stick to the far wall to avoid the barnacles.

Pass under another bridge and watch out for another armored car. Drive fast and zig zag to try and avoid its rockets. Keep going and start hugging the right wall. The Combine start a gasoline fire in a truck on the river. Take the ramp to dodge most of the fire. Another armored car is ahead to the right. Drive fast and burst through the posts under it to get into the tunnel and reach another loading screen.

This post is part of the series: Half-Life 2 Walkthrough – Chapter 4: Water Hazard

This series of articles covers chapter 4 of Half-Life 2. You will be doing a mixture of airboat driving and fighting combine at various flood gates. It’s easy to get confused with the large levels though, so feel free to get a little help.