I actually pre-ordered this game, and man, was it a waste of time and money...
First of all, the online part of this game is perhaps a fascinating idea, but yet, the campaign was garbage. You start off having to go through all this training before you take on any of the campaigns, and the campaign selection ranges from soldier, sniper, defender, scout, heavy gunner, etc. And the good thing is that you can play any of these campaigns at the same time. But the bad is...you have to go through training in every campaign first before going through the actual campaign. The main part of communication of the Hounds is handled by the Hounds going to these communication towers called COMBAS, and you're supposed to let your Hound sit next to one until your pull up map has a communication light-up, which means you can communicate in the lighted zone. But overrall, unfortunately, the campaign is pretty much ruined, and after a few hours of gameplay with the campaign, you'll probably want to move into the online part of Chromehounds, which is perhaps a wiser choice.
The good thing is that the online part of Chromehounds is perhaps very interesting and has a lot of good ideas in it. You of course have to join a squad online, but the problem is that you have to apply to the squad, and you have to wait a period of time before you're asked to join. After you join a squad, you get to participate in a Neriomous War (I forgot to pronounce it) and you get to choose which nation you want to fight for, which includes Morskoj, Sal-Kar, and a nation that has desert terrain (I forgot what it was called). And then you'll be able to participate in the war(s) and raise your merit and ranking, in which the rankings are actually real life military rankings. One con about the online is that it's a interesting but yet very confusing concept, in which you have to capture as much COMBAS and enemy land as you can in a certain amount of time, and if you fail a mission, it's possible that your merit can lower (it's happened to me a few times before). The online part of Chromehounds is probably the best part in the game, and although it has interesting concepts, it still falls short to the Chromehounds base gameplay.
The customization features are really interesting too, in which you can spend hours customizing your own hound. You get your parts from the campaign, or you can get them from purchasing them while shopping in the online part of Chromehounds, in which it has the shop part because in the online part of Chromehounds, you of course have to use your own customized hound. So the customization is another good part of the game, and it can attach you for awhile on some occassions...
2 big cons of Chromehounds are the replay value and the sound. Once you play Chromehounds, it's not going to keep you interested for a very long time unfortunately, which makes a big defect with the replay value. There is some good sound in Chromehounds, but the music overrall just isn't great and the way people talk and sound is in a very strange accent and they speak very quietly, and that can damage the Sound score in the game.
But overrall, unfortunately, you could most likely become disappointed with Chromehounds once you play it. Although the online and customization are the big parts of Chromehounds, the single-player is extremely boring and shallow, and overrall, the base gameplay of Chromehounds is actually pretty boring, so I advise you to caution yourself before thinking about purchasing Chromehounds.