Truly, you must have been gifted with vision from the Emperor himself to have crafted such blessed thing as Exterminatus.
Where do I start? With the first thing I noticed. The heavy thud of my boots as I strode forth. There is nothing greater to set the atmosphere of being an Angel of Death than the rumbling, ominous sound of my footfalls. It becomes a beautiful thing of background noise as you get used to it and doesn't become annoying. I can't wait to hear the sound of a band of my Brothers storming forth to deliver death unto the foe.
Next, the roar of my Bolter. That furious, explosive bang is so befitting of a weapon of the Astartes. In DoW II I was thoroughly pleased with the accuracy of the Bolters, the noise they made and the mini-detonations on impact, but in Exterminatus it is exactly how I imagine the sound and feel of a Bolter to be from a first person view.
Then, the maps. I have perused a few now and I have to compliment you on all of them, especially Digsite and Thunderhawk. The work you put into them is blatant. The symbols of the Imperium, Inquisition and Mechanicum are amazingly done and the podium's and console stations as well. It all adds to that feeling of being in the 41st Millennium!
The modelling is also marvellous, the sheen of the gunmetal that clads the Bolter, the movement of the hands as they grip the grenade, the scale of which represents the massiveness of the Astartes perfectly. Apart from the character modelling, the vehicles, Thunderhawks and buildings are also superbly done. I still marvel at the elegance and style of the encampment in Thunderhawk.
There is so much more to say that it has escaped me, but you have created a truly magnificent mod and deserve much recognition! Congratulations and thank you!