Cheats Half-Life and Counter-Strike:
Half-Life
sv_cheats 1 then impulse 101 this is much boring than bind mouse1 “+attack;impulse 101″ because,impulse 101 still give’s you weapon’s except you have to impulse 101 again and again until nothing happens any more.sv_accelerate 1 makes you fly but only low flying.mp_fraglimit makes it that theirs a limit on killing enemies.Noclip makes you fly up and down even those that cannot be opened.fly i think this is only for Half-Life:source.Notarget makes your enemies can’t see you.

Counter-Strike
bind mouse1 “+attack;impulse 101″
sv_cheats 1
restart….blah,blah,blah,blah,blah,blah,blah.I know you all ready know this but just a reminder.
zombie_mod_1 is only CS:S-Counter-Strike Source
waypoint on noclip makes you fly like in Half-Life i gave to you earlier
+reload is super….BORING!One shot you will reload but to get rid of it,use -reload
Thats it see ya later!
P.S.I will find more cheats on CS and HL-Half-Life and Counter-Strike.Oh sorry i forgot to tell you their is a hidden in Crossfire Half-Life

1.M24a1 (Machine gun)

2.Magnum Sniper Rifle (Sniper)

3.SMG (sub-Machine Gun)

4.Desert Eagle (Pistol)
Short-Cut: Deagle

5.M4A1 (Rifle M16)

6.Bullup or Sterog (w/scope rifle)

7.Ak-47 (Terrorists M16)

8.Krieg 552 Commando (Sterog or Bullup of Terrorists)
Grenades
1. HE grenade

2.Smoke Grenade

3.FlashBang Grenade
Half-Life Death Match
1.Gloun Gun

2.Tao Cannon

3.rpg_rocket

4.Crowbar

5.Tripmine

6.Grenade

7.Crossbow

8.Machine Gun

9.Shot Gun

10.Snark

11.Satchel

12.Hornet