The Firewalker pack is free for all Cerberus Network users - yes totally free. The badass Hammerhead is armed with guided missiles.
”Hovering over the battlefield at up to 120 kilometeres per hour, the Hammerhead also boasts a guided missile system ensuring accuracy even during aggressive maneuvering,” reads the official Mass Effect 2 website.
”Free to all Cerberus Network members, the Firewalker pack includes 5 all new missions featuring the Hammerhead.” BioWare will also be unveiling a new heavy weapon for download as well, presumably free once again for Cerberus types.
The original Mass Effect had the Mako, an all-terrain tank that proved quite the task in getting from point A to B on unexplored worlds. It was ditched in favour of scanning planets for resources in Mass Effect 2. Looking forward to some Hammerhead antics?
Source: Eurogamer