The awaited Guitar Hero: Metallica has now got its release dates settled. Activision has told Eurogamer that the rock legends will hit the US shelves on March 29 and are arriving in Europe in May. That means there’s not much time to practice those fast galloping riffs since GH: Metallica surely is going to have an abundance of them in it. And since Activision is somewhat unforgiven for GH: Aerosmith, they’d better nail it this time to prevent being regarded as milking professionals.