Main article: The Orange Box Think Fast! (10 ) (N/A) How to Obtain: Kill an Elite Soldier with his own Energy Ball. Tips[edit source] In Depth Explanation. Retrieved from "https://achievements.fandom.com/wiki/The_Orange_Box:_Think_Fast!?oldid=7907" Categories: Xbox 360 Achievements The Orange Box Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.