An infinite loading screen is unfortunately experienced in Killer is Dead by PC users who have a dualcore CPU without hyperthreading (or less). This has still not been addressed by an official patch but a recent solution was posted on the internet and involves hex-editing the game's .exe file: KidGame.exe.

Because of this, I decided to hex-edit "KidGame.exe" and make the pre-edited .exe file available for everyone else to download (should you not want to install a hex editor or find the process time consuming). I personally don't need this fix but it's here for PC users that need it and want an easy solution to this frustrating issue.

What the fix, or more accurately workaround, does is that it skips the conditional part of the following instructions in the game's .exe:
(number_of_logical_processors < 8)
{
DO_SOME_STUFF
}

For those who think the file contained in this guide may be a virus:
https://www.virustotal.com/en/file/84c088248ea5c92c362e43c42f7c757ef481d3bcbfadecfc022f01d46723e164/analysis/


* Credit goes to Steam user Gabe Newell Ate My Username ( http://cs2bus.com/id/dopefish69 ) for the hex-edit method, Steam user Misha ( http://cs2bus.com/id/asoggytoaster ) for the above explanation of what the fix does and Steam user Naked Raiden ( http://cs2bus.com/id/Hayachan ) for making minor corrections to this community guide!!