
I've been playing this game for the last several days. So far, I have mixed impressions. The campaigns are fun and generally well designed. The cutscenes and campy atmosphere are quite hilarious (things like the time machine and Rushmore cannons, and the taunts you get from the enemy commanders). There are some nice touches like a short video for every unit and different accents for the Allied units, and the game pokes fun at old conventions of the series during the comical training missions.
The gameplay feels like a backward step from C&C3 in many ways. There are no upgrades, the resource system is dumbed down, veterancy has little effect on units and most of the alternate abilities require too much micromanaging to be useful in practice. The unit AI has a number of new problems, often being less alert than they should be at any setting, and they are prone to getting stuck or accidentally hitting each other when in large groups. The skirmish mode has only 6 players maximum and is limited to one AI personality, and the whole menu interface is sluggish and unresponsive.
The Soviet campaign was very easy, with only one mission that posed any real challenge. The Allied one is much more difficult and interesting. The Allies feel a bit underpowered in general, at least on the 1.04 version I'm using, and you're also up against much stronger opposition in their missions. The Kirov mission near the end was especially nice and felt like a classic C&C puzzle mission. The AI never rebuilds any structures you destroy, although the missions seem to take that into account and still provide a decent challenge. The friendly AI commander is pretty useless, but I found that he/she was rarely needed anyway.
I haven't played the Japanese campaign or any online games yet. It is a fun game overall, but unlike C&C3 I can't see myself playing it much beyond the singleplayer campaigns.