After a completely rework of our menu back-end we've released a new update which has (or should have) full controller support. If you notice any issues with navigation or anything of that sort, do let us know in the forums.
All menus have been modified to display the game controller focus so you can navigate and see which buttons you have selected. This should work in big picture mode as well. An onscreen keyboard was included so you can set names and passwords for online games and also use the chat with the controller.
There were various minor map and material optimizations done as well with more of those to come.
We're currently working on expanding the combat system with multiple weapons, as well as additional maps and drones. Enjoy!