I freely admit that I have yet to ascend to the parts of the "Difficulty" ranking where the game starts to run out of good adjectives ("Painful," "Masochistic," "Suppurating," "Abatoir," "Chuck Norris," etc.), preferring so far to stick to "Challenging" for the most part, but I've just won something like nine games in a row
without firing a shot.
For that matter, in four of them, I never even launched an armed space craft, and in two of
those, I never even
built an armed space craft beyond having one basic Atk:1 Def:1 Defender on each planet (at least not until I got to the "Ten Turn Countdown" warning for a Cultural Victory, at which point I would build a Spin Control Center and the biggest damned dreadnoughts I could all on one planet, just to see how quickly I could wind up as the #1 ranked military).
I usually prefer to go for a Cultural Victory, but the last time I was even engaged in any kind of hostilities was my first ever Metaverse game (on "Tough"), where the Korx, who started the game next to me, blustered at me early on and declared war when I told them to sod off; at which point I whacked them across the nose with a rolled-up newspaper, using a handful of fast but otherwise not very effective attack ships to fly around behind their lines destroying all of their unprotected starbases and unarmed ships. I then offered peace and settled down to enjoy the galactic resources that I had liberated from them in my starbase destructive frenzy, and that was it: No one ever bothered me again that game.
Anyway, I guess what I'm getting at is, if you want to see an endgame that really lacks dynamics, sit in on one of my Cultural Victory games.
(Oddly enough, the game before this peculiar streak started involved me, in the center of the map, being constantly attacked by ever-changing sets of two or three different enemies at a time throughtout the entire game, until I finally just stopped the thing, because it was going nowhere at all, and was just plain
annoying me; so a little bit of peace and prosperity in the next couple of games was a welcome change of pace)