That's it. I won the game. I went on Cydonia and kicked ass of Solar Governor. And it was, as expected, hard, especially considering I got lazy and underprepared (only 10 annihilator armors, 3 bio suits, 1 loader... and a few space suits because I got dumb and thought I could bring fairies\destructors\saviours on Mars). But despite the losses and sheer amount of sectopods and mind control I persevered.
I also got an opportunity to try out some of these toys that before were too awesome to use, like master plasma pistols, blaster launchers and fairy dragons. They're all very good, but in the end, the humble heavy plasma, sharp electro-blade, hot willie petes, and magnificent BFG carried the fight.
Jack Sparrow difficulty. Ironman. Don't know why final numbers are so skewed, probably because the campaign started a lot of time ago. Now I can start a new campaign and try out the added early-game stuff.