Hello. You may remember me from a thread of the same title on the D4 forum.
Another game which is controlling weird and since we have a PC, we can fix it ourselves!

This fixes not having no "always run" or "run toggle" option. We do not edit the Unreal Engine 4 files at "C:\Users\<yourname>\Documents\My Games\The Vanishing of Ethan Carter Redux" because they are encoded now and we want to leave our sanity intact.
- Bind the "Run" function in the game to the "shift" key.
- Install AutoHotkey at http://ahkscript.org/
- Create a text-file called "ethan.carter.ahk" with exactly the following 7 lines in it:
$shift::
Shifted:=!Shifted
If (shifted)
Send,{Shift Down}
else
Send,{Shift UP}
REturn
- Double-Cick on it.
- switch back to game. press "shift once". you can run around now without holding additional keys. yay!