Complete the normal version of a chapter within the following turn limits (varies by difficulty) or accomplish the corresponding tasks in that chapter to unlock the Extra version of that chapter:
Chapter 3x Complete in 24 (Normal), 28 (Hard), 35 (Maniac), 38 (Lunatic), 43 (Lunatic Reverse) turns. 1 units died or retreated in Prologue.
Chapter 6x Complete in 20 (Normal), 24 (Hard), 28 (Maniac), 32 (Lunatic), 36 (Lunatic Reverse) turns. Rickard was recruited and is alive.
Chapter 10x Complete in 15 (Normal), 18 (Hard), 21 (Maniac), 24 (Lunatic), 27 (Lunatic Reverse) turns. Three or more enemy clerics survived.
Chapter 13x Complete in 20 (Normal), 24 (Hard), 28 (Maniac), 32 (Lunatic), 36 (Lunatic Reverse) turns. Both enemy thieves did not escape the map.
Chapter 16x Complete in 18 (Normal), 21 (Hard), 25 (Maniac), 28 (Lunatic), 32 (Lunatic Reverse) turns. My Unit is promoted and Level 5 and up.
Chapter 20x Complete in 24 (Normal), 28 (Hard), 33 (Maniac), 38 (Lunatic), 43 (Lunatic Reverse) turns and have all the spheres to make the Shield of Seals. Three or more of Wolfguard and Midia joined and lived; and have all the spheres to make the Shield of Seals.
