Six months ago, gamers helped veteran game developer Christian Allen meet his small team's $200,000 Kickstarter goal, a goal he hoped would enable them to create a throwback to the wonderful, super-realistic, tactical, plan-or-be-killed shooters of old. They would call their new game Takedown and want to make it into… » 9/20/12 2:00pm 9/20/12 2:00pm