http://www.renaissancekingdoms.com/[/code:1j84utle]. First I need an engine if possible, I would rather use something extensively tested, than start from scratch.
I have an economic science bachelor degree, and a programming college diploma, so together with my experience in online marketing, this should be a good start.
First of all I don't know the game so have only looked at the screenshot and from the description it says its a RPG, strategic and political game. My initial guess is that you should be able to make something similar to this in C2, but that it wont be easy. But that is not related to C2 especially, but in general regardless of what tool you use. There are a lot of coding that needs to be done and depending on your programming skills, I would say that should you choose to use C2 you would probably be able to learn it fairly fast. So the biggest issue I think you will have is project organisation, which in my opinion at least, is an area where C2 is not all that good. Not meaning that its worse than other tools, but working on big projects you can easily screw things up, the tools for navigating a project are not really good. Its basically a "Search" which are fairly annoying to use, so personally I rarely use it. But if you can get your project organized well, you can do it I think.
As I don't know the game and how it works, you should be aware if you know you are going to use path finding, you need to test it in C2 and see if it can do what you need. Its very limited and not very flexible. There are some plugins created by some of the users that seems to be a bit better, but also work a little bit different. So if the free C2 version can use plugins you should check out that section on the forum.
But regardless of which path finding you use, you should be aware that C2 only uses one collision map. Which probably makes little sense to you, but simple put, it means that if you need different types of units like "Ground", "Ships" and "Air" units. You can't give them individual objects to collide with.
The reason I write this is because the game you refer to seem to use some path finding, so its of course good to know before choosing C2.
So overall I think you can make a game like that in C2, but it will require a lot of time.