Hawken has begun its third and final closed beta event, starting this week and going through until December 6. Players already invited can download the client from the official website, jump in and start shooting. You won't need to re-install, the developer says, if you've played in a previous closed beta event.
Meteor Entertainment has presale packs available for the free-to-play shooter, with boosts and extra equipment available for those who know they're ready to spend some cash. But if you're not yet sold (or haven't gotten a chance to play), the game will go into Open Beta and become available to the public on December 12.