UPDATED: Fresh keys added.
Exciting-looking sci-fi combat game Warframe (which seems to feature strange-helmeted space ninjas) is currently being smoothed over at the home of action-veterans Digital Extremes. It is also in beta. This beta can be accessed, like a secret club, by getting the keys from a hidden vault in the depths of RPS.
The most recent video of the game in action, framed by the creative director doing the chat, is below for your visual interrogation.