updated the game and played with the min hud a bit.
I think it is good that you have increased the size of the levels button, because while the mouse is over the levels button, the level number and the icon are covered by the cursor so that the player cannot see it.
is it really necessary to show all the help in tooltips, maybe show the level number instead?
well, that's a matter of taste, as you are probably aware i decided to take a different approach in my own hud.
putting the end turn button near the other buttons, as i remember it was my own suggestion, might have not been such a good suggestion, because people develop automatisms, which means that when they see a button they click it before they think what it does (sounds stupid, but it is true), and i accidentally managed to click end turn twice when i didn't really intend to.
conventionally, as far as i remember examples, end turn is always in the very lower right corner of the screen, it might be worth experimenting with moving it to the right edge at least, if it is to stay more or less where it is right now.
by experimenting i mean that the right edge is also something that might be intuitive and therefore useful for some other button.
i was bit surprised that the hide\show functionality (default hud, if i remember correctly, but also min hud) uses lmb for opening a window, and rmb for closing it.
as far as i have seen that functionality in gui frameworks, the same mouse button is used for both opening and closing.
for example, the player might want to just view the soldier stats window, click nothing there, just view it and close it, then it might be slightly more convenient not to make the player coordinate between lmb and rmb.
and, as the standard that the player expects might be that hide/show works with the same mouse button, then if it doesn't, and the player is not saintly careful, the player might not notice that the other mouse button is needed for closing and might derive that the hide/show just does not work correctly.
(lol, lots of text on such small thing)