You can't change change any settings because the keyboard doesn't work and you can't get to the actual game to change settings because the resolution makes it impossible to complete character creation - did I understand that correctly?
It's possible to change your graphic settings by directly modifying the settings file. In Windows, it's located under C:\Users\Your Username\AppData\LocalLow\Elder Game\Project Gorgon\GorgonConfig.txt. In that file, change PrefsFullScreenWidth and PrefsFullScreenHeight to what you want. You can also try disabling full screen(PrefsFullScreen). Make sure to restart the game after making changes.
It should look something like this:
Code:
1 PrefsFullScreen 0 1
1 PrefsFullScreenWidth 0 2560
1 PrefsFullScreenHeight 0 1440