Trauma Center: Under The Knife Codes -

X missions:
Successfully complete the game to unlock bonus X missions under the "Challenge Mode" option. Completing each X mission unlocks the next mission in the series, in the following order.


X1 Kyriaki 
X2 Deftera 
X3 Triti 
X4 Tetarti 
X5 Pempti 
X6 Parakevi 
X7 Savato