here:
Firs you have to do is to suspend the S4Client.exe .
Then you can open your Cheatengine, select the s4Client.exe Process...
i tell you how Walkspeed Works.
First you have to select the "Text Search" Mode.
Then type in move_speed_rate then you should get some Adresses.
Now you select the first and click on the red Arrow from the Bottom of the
"Adress List" Box.
So Then you have your Adress, now you can change it in what you want!
for more speed use "range". If you are finished with Searching Close your Cheatengine and Resume s4Client.exe Have Fun ^-^
So that was it