Hey there! I've just uploaded the v2.1(7) build that adresses some issues (one being the resolution and camera follow you mentioned above). Resolution and camera problems should be (hopefully) fixed right now. Let me know if anything's broken.
If you hold "alt" key when doubleclicking the executable to launch the game, the native resolution dialog will appear. You can choose any resolution your monitor supports.
Options menu is only usable with mouse at the moment since the game has only partial gamepad support.