You can consume
the Reporting REST Service in code and return the rendered report to the user. If you need the viewer, you can use a WebView
for instance and display a page, but the export and print features would not work in the context of WinRT XAML application out of the box.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.