This actually looks good to me. Most helicopters can be shot down with a rifle. They are huge engines with large fuel tanks and large, whirling blades, and it is not that difficult to get them to destroy themselves with their own momentum, height, or fuel.
I concur. Helicopters are a collection of single-points-of-failure, disasters waiting to happen. (Particularly the pilot - they have to be continuously controlled and crash almost instantly if anything incapacitates him.) Their vulnerability is justified only because their extreme usefulness oughtweighs it. With eight rotors I'd be surprised if this vehicle couldn't at least come to ground safely with at least two of them destroyed, and the multicopter approach has been under autonomous computer control from the start - made practical only by the automation.
I envision this thing's missions as being primarily extreme rough-country ground transport, with short hops to bypass otherwise impassible terrain, reach otherwise inaccessible destinations or targets, attack from above, or put on a burst of speed when time is of the essence. Think a truck-sized "super jeep" ala Superman. Being primarily a ground vehicle lets it perform longer missions and reduces its visibility and vulnerability compared to a helicopter.
Just because you CAN fly doesn't mean you DO fly all the time. As is pointed out in the webcomic Schlock Mercenary: "Do you know what they call flying soldiers on the battlefield?" ... "Skeet!"