Before the end of Scenario 46 Joshua and Cliana must get an individual kill count of at least 70. Then on Scenario 47 you must not allow Joshua or Cliana to engage any enemy unit or enter any allied battleship. Either character must reach the designated locations and complete the scenario's SR Point in six turns. The Forte Gigas will be available when you complete Scenario 48.
Bullet and Kusuha must each have an individual battle encounter with Kanan and Taihou on Scenario 38. Then on Scenario 40 perform the same requirement with Bullet and Kusuha. Bullet's individual kill count must be 50 or more before the end of Scenario 40.
Sanger must either destroy the JinRai or have it retreat in Scenario 41. Then on Scenario 42 you must complete the scenario objectives as usual by luring the JinRai to the designated location. When you have accomplished that move the Dygenguard and Aussenseiter next to the JinRai and have either Sanger or Ratsel reduce the JinRai's HP to at least 3,000.