This will be a dangerous mission for you, but the rewards will be great. Eliminate 850 Annihilators.
The Reaper fleet won't be half as dangerous without their cruisers. Terminate 200 Annihilators.
Now that you've chewed your way through a few of them, you know what you're dealing with. Crush 75 annihilators.
As the Reapers' battle cruisers, the Annihilators are not a force to be taken lightly. Destroy 25 annihilators.