Accumulate at least ten hours of Online Multiplayer game play.
Unlocked: 13 May 2010 15:58:58
All-in-One
20Perform a Single, Double, Triple, Tetris, T-Spin Single, T-Spin Double, and 8 Combo in one game!
Unlocked: 08 Mar 2010 14:39:16
Combo
20Clear one or more lines with successive pieces to increase your Combo count above eight.
Unlocked: 08 Mar 2010 14:39:15
Speedster
25Complete a Single Player game of Marathon in 20 minutes or less.
Unlocked: 10 May 2008 13:34:13
T-Spin
10Rotate the T-Tetrimino into a T-Slot to perform a one or two line clear.
Unlocked: 15 Mar 2008 14:42:57
Score a Back-to-Back Tetris in Online Multiplayer.
Unlocked: 01 Mar 2008 16:39:39
Win a "Free for All" match in Online Multiplayer.
Unlocked: 23 Feb 2008 16:17:59
Old School
25Complete a Single Player game of Marathon without using the Hold Queue.
Unlocked: 21 Feb 2008 23:06:54
Reach or exceed level five in a Single Player game of Marathon.
Unlocked: 21 Feb 2008 23:06:53
Rainbow
10Use at least one Mino from each of the seven Tetriminos to clear a single line.
Unlocked: 21 Feb 2008 22:39:29
Clear five or more lines during one Single Player or Online Multiplayer game.
Unlocked: 21 Feb 2008 22:39:28
Tetris!
10Clear four lines at once.
Unlocked: 21 Feb 2008 22:39:28