I DLed CS:CZ but then I got stuck so I went around looking for an RPG game. Well anyways I wanted to finsh CS:CZ so I used the cheats from HL1 as the games have the same engine and.. YES THEY WORK!!!
As you enter CS:CZ before you enter a new game/load a game click the ~ button to bring up the console like in CS and type in "sv_cheats 1" (don't add the"") after that just type in any HL cheat like GOD for godmode or NOCLIP to walk throw walls. I'm still hunting for an all weapons cheat I think there was one anyway have fun!!!