I get a DX error, but it's already installed.
If you get an error saying you need DirectX Runtime to run Breach you probably need to update DirectX or your video card drivers.
To provide you with all the fun graphics and action Breach you make sure you have the latest version of DirectX with all the updates and patches.
Update your video card drivers
DirectX needs to be able to talk to your video card to run. If updating DirectX doesn't resolve your issue try updating your video card drivers. You might think that if you've recently run a Windows update to patch your computer, you have the latest drivers. Unfortunately, Microsoft does not always have the latest driver patches; they only accept WHCL (Windows Hardware Compatibility Lab) certified drivers. ATI and NVidia don't always certify their drivers, so it can be best to go the directly to the source.