ACHIEVEMENT - HOW TO UNLOCK Clear 5 Lines (10 points) - Complete five lines during a Single-Player or Online Multi-player game. Reach Level 5 (10 points) - Reach or exceed level five in a Single-Player game of Marathon. Tetris! (10 points) - Beat four lines at once. T-Spin (10 points) - Rotate the T-Tetrimino into a T-Slot to perform a one or two line clear. Rainbow (10 points) - Use at least one Mino from each of the seven Tetriminos to clear a single line. Combo (20 points) - Beat one or more lines with successive pieces to increase your Combo count above eight. Online Rookie (20 points) - Win a "Free for All" match in Online Multi-player. Online Back-to-Back (20 points) - Score a Back-to-Back Tetris in Online Multi-player. Online Expert (20 points) - Accumulate at least ten hours of Online Multi-player game play. All-in-One (20 points) - Perform a Single, Double, Triple, Tetris, T-Spin Single, T-Spin Double, and 8 Combo in one game. Speedster (25 points) - Beat a Single-Player game of Marathon in 20 minutes or less. Old School (25 points) - Beat a Single-Player game of Marathon without using the Hold Queue.