This hack is about manipulating the speed of the player, it's mostly done in a manual way with key binding.

It a fun way to surprise and have some fun with them (good old days, I know!). Speed Hack is one of the funniest and worth to try cheats! I used to play with it with my friends in Local Network server. In my experience as a counter-strike community admin, I have even spent some long time (2weeks-month or even longer) to get proof of some WallHack Cheaters! But, it can be super hidden and covered if it is manual or semi-automatic and the player knows how to use it that way! It is more discoverable by cs 1.6 admins. This type of cheats can be detected with the anti-cheat system, but only for the most known types of it. Some will allow you to use esp (lines shows the view of the player), while others are semi-automatic or even manual. However, there are many other WallHack cheating softwares with more advanced and different features. It is fully automatic and works directly and automatically with the game start. The most known one is the OpenG元2, it's the same one shown in the picture above and the most simple one. The cheat has many types of different softwares and DLLs. Which allow you to hit and kill them even without they can see you. This cheating software allows you to see other players from the same or different team threw the walls.

Wall-Hack is very known and used in the cs 1.6 world as the aimbot one.

Cs 1 6 cheats