After having snatched the province away from Chaos and gaining the new ability I decide to try and take on what makes the Orks so strong, the Hyperion Hills, holding which obtains the Forward Bases ability for that race.

This is a VERY frustrating mission that I have never been able to beat. You start off with a massive number of troops and can not have any reinforcements or bases through out the entire mission save for the in-squad reinforcement. You must destroy all of the Orks buildings and they can create a seemingly unlimited number of troops, I have seen the entire canyon completely filled with red before on previous playthroughs of DC.

So I try the head on approach for this attempt and it fails miserably. I do get a fair ways in but then the Orks sheer weight in numbers stops me in my tracks before I can even get half of their buildings destroyed.