Okay, so I did go through the "work" of downloading this and trying it out, and my experience with an offline run-through of a single mission was...interesting. It's probably because I've been playing Shadowgrounds over the past week, but there were a few disparate features between the two that were giving me trouble. For one, the realistic reloading was absolutely killing
me, as every shooter I've ever played requires you to mash down the R button continuously.
I was really missing some sort of flashlight function beyond the disposable flares; from a plausibility standpoint, it doesn't make much sense that something like that wouldn't be in there. The squad control setup was just complex enough that I was bothered by the lack of an in-depth tutorial (I had the same complaint about TF2 until Valve finally implemented one in a recent update), and I sort of fumbled my way through the mission. I was also unclear about whether there was supposed to be some sort of overriding backstory to the game, which would be a plus. It was reasonably fun, though, and I'd probably be interested in at least giving multiplayer a shot.
Also, I was surprised to exit back to the desktop and find a "Virtual memory too low" warning in my taskbar, especially considering that I have 4 GB of physical RAM between my motherboard and video card. Maybe this anemic power supply is causing issues after all.