Hey, first of thanks for the quick reply^^
So I did as you told me, and now the state of my game is the following:
-Left clicking works, so I can finally navigate the menus
-At first it seemed like the Keyboard didn't work, but then I discovered that all Keybindings were reset to "0".
Most of them I could reassign properly, except for the right mouse button and ESC.
Thanks to your advice the game is now quasi playable, but it is really weird that it won't let me reassign those two buttons..
Whenever try to set an action to RMB, it just returns to the previous binding,
when I try it with ESC (for getting into the menu), it makes a noise as if I just canceled the binding.
Did anyone else ever have this sort of experience?