It appears that currently there is no way to freely re-map controls in game - there are three preset options to choose from, and apparently, as someone has found in another topic it’s possible to re-map them via editing the configuration files.
Still, many players don’t like the idea of having to tinker with game files and it would be awesome to allow full, or at the very least - partial mapping of controls normally, through options menu.
Also, many PC players have gaming mice with multiple buttons, it’s kind of a waste if you can only use the predefined control scheme.

