So he really is going through with the release, well I'll them him one huge vulnerability in his Anti-Cheat that he should fix.
Since it relies mostly on DLL Injections and Lua scripts if you were to make a hack or bypasser that left no traces and also didn't inject into the hl2.exe process,
Well... lets just say the anti-cheat would meet QAC's fate that's all I'm going to describe at the moment.