if you know what you are doing and have your tools ready, it doesnt even take an hour to make at least a working wallhack for a new game. and if the render engine is working similar to others which you already hacked, you can make a full featured hack in no time.
Of course, bypassing anti cheat methods could take some time too, but if they dont improve their current system, they have already lost.
But honestly, vc2 sceens dont look that great. If you need a key for online play, and they wont improve the multiplayer a lot, who the f*** wil buy/play this?