Hm one thing I'm starting to notice.. all the games with 'perks' and 'levels' like Killing Floor, MW2, etc. have no protection on the leveling up part. You can easily just search for your exp points, and make them up to 9999999999, so that you level up instantly about 20 times next time you go in. In Killing Floor people wondered how I leveled up faster than them when I had it less, and I just said 'It's cracked version.', but really I just went into TSearch and edited the .exp, and then I could one shot kill things with automatic weapons lol.