Opening stats.bin file

I tried to open the stats.bin with PowerISO in the Killing Floor directory and i get this unsupported or invalid error.
Need help opening this file

Why do you wanna open stats.bin? I think ".bin" in this case just means binary file, so it will be in its own format, not one that opens in PowerISO.

If you wanna play level 6 non steam, use a mutator like ServerPerks or PerkReplacement.

If you want level 6 on steam, follow the tutorial on this forum.