The first time I found the Fortress, although I had the Damocles, I freaked out and instantly used the Chromium Gong on it. It worked, of course, but it was slightly... unsatisfying.
So the second time I found it, I decided to try ramming the Damocles into it (as was obviously intended), because I wanted to see how cool that looked. So I made the Damocles my "Leader," made a nice line formation with all my other ships spread out to either side of the Damocles, and loaded them all with either anti-fighter weapons (to hold off that endless stream of them that comes out after you) or long-range capital ship killer weapons to pound the Fortress — I even smashed the Timeless Bauble just to get a third Cobalt Torpedo — and I put Reactionless Thrusters in the Damocles to make it move as fast as possible.
Then I popped into the Black Hole and immediately began charging the Fortress...
Well, "charging" very slowly, anyway. Seems the Damocles is so damned big that even Reactionless Thrusters don't move it all that fast.
But charge (slowly) we did, sweeping aside wave after wave of fighters on the way (and thank you, Happiness is indeed a PVC)... and as we drew near enough for the long-range weapons to start firing at the Fortress, I discovered with some dismay that 1) the Fortress apparently repairs both its shields and its hull damage VERY quickly, and 2) Holy Crap, IT has Cobalt Torpedos, too! And OUCH, they sting! It was taking some serious chunks off of the Damocles' Temporal Flux Shield, and I was starting to worry that I might not surive to make that ramming attempt...
And then, as we drew near enough for the medium range weapons to start firing too, we began to cause some serious damage to the Fortress (finally causing the damage faster than the Fortress could repair it)... and then, as we began to draw VERY near and the short range weapons began to fire as well, and the Damocles was LESS than one full ship's length away from ramming the Fortress, it suddenly went dark and began sparking, then burning, and then it blew up.
Okay, so three Cobalt Torpedos, a Multi-Missile Launcher, a Particle Vortex Cannon, a Tachyon Ray Gun, a Positron Scrambler Beam, and an Anti-Chronon Pulse Blaster (with all the best battle computers behind them, and a variety of smaller weapons, to boot) are apparently enough to kill the Fortress.
But I got cheated out of the pleasure of RAMMING it.
AGAIN.
[sigh]
I wish there was a way to make the Horloge/Damocles/Primordius Quest occur more frequently...