Command massive armies of tough space marines or nightmarish cyborgs in endless battles across the Strogg home planet.
The "slipgate hub" on Artemis will see Strogg cyborg infantry placed in a very tough fortification called the defense grid. There is no other way into the slipgate hub and it will have to be taken by marines at all costs. So well-fortified and manned is this defense grid, that the marines may need an extra weapon, the portable grenade launcher, to help clear it.