Will there be any more chapters after bonus chapter 4 or is that it?

is this chapter secret and needs to be unlocked?

When I go into options and change keyboard settings to my play style it all seems ok but as soon as I try to play, nothing works, I can't move only spin around in a circle. Neither the arrow buttons nor WASD work. But then strangely when I go back into the options menu all I have available to alter are game pad controls. There are no pc keyboard options this time, only game pad which I don't use. I've validate the files and my gaming pc's have the latest hardware and all drivers are up to date yet this pro...

If you walk in between the furniture next to the unlit fireplace near the stairs, you can get stuck to where you have to restart the game. There is also no way to reset the controls if you change them. Now, when I interact with the tv, it shows NULL to start the cursor. I can't continue the game now. These issues really need to be fixed. There also needs to be a way to manually save the game because checkpoints are really far away....

add Korean language planned?