First, appears to be a misspelling or obscure modification of "kz" (Kreedz) — a popular Counter-Strike 1.6 movement mod involving long jumps, climbing, and crouch-jumping through difficult obstacle courses. "HNS" stands for Hide N' Seek , another CS 1.6 mod where one team hides and the other seeks, relying on movement skills like bhop, ladders, and air strafing.
Counter-Strike 1.6 movement modes like Kreedz (KZ) and Hide and Seek (HNS) transformed a tactical shooter into a high-stakes parkour game. kzh cs 16 hns cheat free