Got DoW2 Retribution for b-day along with Soulstorm. Installed both of them around the same time, but Soulstorm ended up gone to free up space. I hate the Sisters of Battle in DoW. They suck utterly for my play style (flame turrets? What is this, Red Alert? flamers and heavy bolters only outside heavy weapon squads?). I get the whole purging with fire fluff connection, but they just don't work for me. Also, I expected more territories in single player considering the territories on a single planet in Dark Crusade. I'll probably not be reinstalling Soulstorm any time soon.
Retribution? Well, all I can say is HOLY CRAP. That Exterminatus was incredible to see, and I hope I never see it again in a WH40k game. Playing through on the IG/Inquisition campaign currently (and need to work on finishing that and then doing Marine campaign).
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I can't help but think that the Eldar and Imperium need to work together to "guide" a Tyrannid Hive fleet into the Eye of Terror.