Too late to be reviewing this thing, but I did want to say that this is the most kickass scenario out there. The maps are beautiful and immensely complicated, but at the same time, I found it easy to move from place to place and complete the objectives.
The combat really shines here. There are hordes of powerful enemies, but the arsenal is far more powerful (and more satisfying) than the standard Infinity weapons. There is always enough ammo, and usually enough maneuvering room, health, and saves to slaughter the hordes without being too frustrated. I've been more frustrated with other scenarios with far fewer and less powerful enemies.
Also, a great scenario to increase your skills in solo play. I first played it through several months ago on Normal. I'm now in the middle of a playthrough in TC, and it's even more fun than before.