Half-Life Hints

Enter the cheats under gameplay by pressing § or |. Then you should get a screen coming down, if not, try reinnstall Half-Life.

God: This cheat makes you invincible.
Notarget: Your ennmies can't see you
Impulse 101: Ammo, weapons and armor.

You don't have to enter the cheats everytime you need ammo or other things, you just press the up button (not w but the other)

Have fun!

Half-Life:
<BR>
<BR>
When you face the three Tentacles in the test chamber, remember that they only hear you, theyre blind, so dont fire guns.
<BR>
<BR>
The best weapon is the grenade, it lures the Tentacle away from you.
<BR>
<BR>
When battling Nihilanth, you have to destroy his wall-mounted power sources before aiming at him. A full charged Gauss blast will take it out if youre lucky.
<BR>
<BR>
Then concentrate all your firepower on nihilanth. Once you do enough damage, Nihilanth's head wil open and shut.
<BR>
<BR>
Equip a fully loaded Shotgun, and jump on an organic trampoline to get above nihilanth.
<BR>
<BR>
Fire a couple of secondary fire shells into his brain, and soon enough, Nihilanth falls like a lead balloon.
<BR>
<BR>
Opposing Force:
<BR>
<BR>
Final boss:
<BR>
You need to shoot out his eyes with the two mounted guns. Once theyre busted, get down and rip some serious power into the newly opened cavity. Once the cavity shuts, repeat the process, taking out any Shock Troopers that appear. When the big lunk takes out the bridge, use the barnacle to get across to the second cannon. After a few rounds, Chunky vanishes, leaving you stranded in the helicopter by the G-Man.
<BR>

In order to get past the three green tentacles without any ammo(and your desperate).
<BR>
<BR>
When one or two of thhtentacles is looking the other way or has gone down run as fast as you can and you will confuse it.