Half-Life Walkthrough

We've got Hostiles

Go down the corridor and around the bend to the right. From now on you'll have to watch out for little red laserbeams crisscrossing your path. Tripping them will activate painful sentry guns. Jump over them or duck under them whenever at all possible. Also, beware for whitish-blue laser beams, these indicate tripmines, which will explode when anything (you, a box, an enemy, anything) crosses their path.

You'll play a game of cat and mouse with the sentry guns and a bunch of teleporting monsters here. Eventually you'll come upon some boxes which you'll need to hop over.

On the other side of the boxes is a particularly clever trap: red tripwires, a slippery floor, and an open elevator shaft. You can try to hop the trip lasers, or you can bounce a few grenades around the corner to take out the sentry guns. Be careful, though: if you break the glass on the wall switches near the big thick doors, alarms will go off and the doors will slowly seal shut, which doesn't help you much if you're on the wrong side.

Be careful with the tripmines on the other side of the thick door. I recommend remote detonation via grenades.

Continue forward and up the ladders.

(Conspiracy theory: try shooting the G-Man you'll see up above. He must have some sort of personal force field.)

In the next room you'll see a scientist run up to a soldier, thinking he's being rescued. Naturally, he's mistaken. (And the plot thickens...) Don't bother saving the scientist (you won't exactly be a boy scout by the time all of this is over) and don't bother trying to reason with the soldier either.

(Sadists: if you do save the scientist down here, try positioning him in front of the explosive barrels and then blowing everything up. Watching scientists gib never ceases to amuse me.)

Go up the lift by pressing the button. Up here you'll see some another scientist getting his, and there will be three soldiers waiting for you, as well. Be careful! Soldiers will flank, retreat, and work together against you. The best way to survive an ambush, as veterans will tell you, is to run straight into it. The same logic applies here.

Go up the stairs and through the door. After passing under some tongue monsters, go to the left, but watch out for the red triplasers and a couple of sentry guns.

After getting through that area you'll watch a few more scientists getting cut down, and you'll have a few more soldiers to deal with.

(Lure one underneath a tongue monster, if you can. It saves ammo and it's fun to watch.)

Loop around up the stairs and go down another hallway. You'll have to deal with the tongue monster convention again.

You'll come to another big room with some soldiers waiting around. Do whatever you need to in order to take them out, and then loop around the catwalks to make your way down the floor level. Enter the freight elevator and press the button to go up.

The surface! Finally! You're free! Well, not quite... outside, you'll find quite a few soldiers to deal with, as well as frequent airstrikes and a chopper which circles around, dropping more troops. You can play a game to see how long it takes before you die or, if you'd rather keep going, find the bunker near the middle of the outdoor area and dive down.

Down here, open the door, watch the debris fall, and then jump down after it. Hanging around only brings more and more soldiers deciding to "drop in." Find another ventilation shaft and go down it.

Wander around the vent shafts all you want, but the way out is by dropping down below the spinning fan blades (squeeze up against the corner so you don't hit them). Then exit the fan chamber through the middle vent. Crawl along that, up a ladder, through another vent, and you'll come out in a room which you saw quite a while ago. A scientist will give a speech about what to do next. Do what he says by pressing the button to open the silo door, then exit.