On
easy I got to the end boss three times with the circle cruiser (have yet to figure out how to unlock any of the other ships).
1st time it blew up AND jumped away at the same time.

(As far as I can remember)
- shields were only 2 dots, only had the healing augment, had lots of power, blast doors, was fully repaired before the fight
- 1 ion cannon, 1 heavy ion cannon, 1 missile launcher (big one that used 3 power), 1 anti-ship drone, 1 beam drone
2nd time I jumped in from the previous sector on top of the boss (may be a bug, didn't appear at the federation base) with about 3 points of hull left, no drone parts, no fuel, 5 missiles. The Donut 'sploded very quickly.
3rd time was a long battle that I lost.
- shields were 3 dots, healing augment, hull augment, repair arm thingie,
- 1 ion cannon, 1 heavy ion cannon, 1 heavy laser II, 1 anti-ship drone
Currently missiles look to be very effective. I was going to say more, but there isn't a spoiler tag for the boards.
