Strong Armed Achievement
Complete the Strong Arm tutorial
From the Main Menu, go to Multiplayer > Tutorial, and a video will play. You can skip it by hitting , but you should watch it in order to learn how to play the game. After the video plays, you will spawn in the tutorial lobby. The room you are in has 9 diagrams on the walls. Go up to each one, hit to bring up a paragraph on-screen, and hit to continue. Quickly do this for all 9 diagrams and the achievement will unlock.