Hi there, I have found the game really by chance and since I love X-COM I decided to give it a try and was surprised by the GUI design. You have GREAT in game art why not the UI ? This is done in 20min (yeah have no time ) and yes I`m GUI artist
Hope you like it and btw I have used elements from your rifles design - they are lovely@
full res image:
https://drive.google.com/file/d/0B2v4Mb5m9-EeZ09qR1RPSm1yUDg/edit?usp=sharing