So just won my first maximum difficulty game against nemesis. This game is tooooooo easy. The only difficulty I see is if you start right next to the nemesis who declares on you in 5 turns, or in fighting off large minor invasions at the very beginning. Hell, I didnt even fight a single battle against the nemesis before having been declared victor, I jut declared war, steamrolled my light tanks to take over 3 border cities and immidietly gained victory screen, while the enemy had all of its troops on the other side of the planet. The only battles happened after this for the lulz where I attacked some enemy unit that just changed from armor wearing rifle gunners to heavy-battlesuit laser guys and steamrolled them hard with my light tanks.
Few things I noticed: Air bridges are damn useful, just few ultralight aircraft provided for my troops when rebels cut my rail lines. Air bridges love to scream "you bastards!". Tech level 8.5 AI loves to use firearms, combat armor and howitzers on tnaks while my tech level 7 army was already using battlesuits, laser rifles and beam gun heavy walkers. Airbases are a pain in the ass to built, I just used ultralight aircraft the whole game, although I did have cca 0,8 bar atmosphere while only 0,3g gravity, and after lots of aerodynamic + propeller optimizations all my planes had 20+ range with just ultralight turbo propeller even at max load. Metal is always in shortage. After having like 6+ cities people kept revolting and I had no idea why or where, nor did I even care, was too much micro. If you get event you dont like just ignore it, you save PP, and I didnt notice any downside. Aliens with lots of health bonuses and hard armor are a pain in the ass to kill, aircraft are your best friend against them. Artifacts are the boss, even uncommon sites give you the best artifacts like cloning or gravimetric generators, I researched solars around the time I got hi-tech industry just cause I had so much power from gravimetrics I scavenged from my single uncommon artifact site. Solars >> power plants. Get large enough population and you are swimming in so much cash you dont care about salaries at all.