Complete the indicated task to unlock the corresponding scenario.

Battle Of Nagashino: Complete the 1582 scenario in Unification mode.
Incident In Osaka: Complete a Unification scenario a "Regent" rank.
Onin Legacy: Complete a Unification scenario with a "Shogun" rank.
Ten Years After: Complete the 1570 scenario in Unification mode.
The Final Battle: Complete a Unification scenario with all researchable technologies completed.
To Declare War: Complete a Unification scenario while playing as the Oda clan and view five Nobunaga-related events.