As you know Big guns posted a picture of what he called a hack it wasn't really a hack tho lol this has been done before there's videos of it on you tube.
This is what to do:
1.) Make a new folder on your desktop or wherever it doesn't matter name it anything like "CA Files DON'T DELETE".
2.) Go to Start, My Computer, C:/ or what ever your main drive is, Nexon, Combat Arms, Game.
3.) You should know see a bunch of files there Click the ones that say CHAR on them beside CHAR it should say Head, Face, Body, Hand Drag what ever you want to get rid of to the folder that you made don't delete or you will have to reinstall the game to get the files back.
4.) Once you've done this go in game and you wont be able to see anyone and you will be invisible if you delete everything or if you just delete the body and stuff like i did u will be in the ground and may fall through.
5.) For the Guns do the same thing drag the files you dont want for example look at the files full names you will see diffrent types of weapons i.e "GUNS_M_PV_SR" - Sniper rifle, "GUNS_M_PV_SMG" - Sub-Machine-Gun and so on.
Note: *DON'T DELETE THE FILES MOVE THEM TO A FOLDER SO THEY CAN BE RESTORED LATER.
* When you delete the body you will be able to go through and under objects and rapidly jump to not fall through the map.
* You will not be able to see anyone as well they wont be able to barley see you.
* Turn Enemy Name Tags - ON on Harold's Bypass 3.5 to see your enemy's.
* Fire randomly and hope you hit
Don't forget to thank me
Happy Hacking and Enjoy!