FireFall. The video shows off the various classes, or rather the classes of "frames" with which players can outfit their avatar. Try not to worry about the technicalities and focus on the jet packs and ice bullets.
Red 5 has also announced that there will be a FireFall live streaming event next Friday, May 6. "A group of e-Sports broadcasters" will take part in the event in order to "provide their insights into the game and help [Red 5 Studios] tune the competitive side of Firefall." Red 5 will be showcasing a live match of FireFall during the event, which will be hosted on the studio's Justin.tv channel.