To Unlock the Tallgeese III beat mission 3-1 then go back and take the bottom with Athrun and you will have to fight the Tallgeese III and finish the mission to get it.

Enter Survival Mode and destroy at least 20 mobile suits.

Unlock Survival Mode by clearing Time Trial in five minutes or less.

Clear all phases and chapters in Mission Mode.

• Aegis Gundam: Phase 1, Chapter 1
• Blitz Gundam: Phase 3, Chapter 1
• GAT-X303 Aegis Gundam: Beat Phase 1, Chapter 1
• Buster Gundam: Phase 6, Chapter 1
• Ginn: Phase 5, Chapter 1
• Ginn (Miguel): Phase 1, Chapter 1
• GINN Miguel Custom: Beat Phase 1, Chapter 1
• Wing Gundam Zero Custom: Phase 4, Chapter 1
• BuCUE/A: Phase 1, Chapter 2
• BuCUE/B: Phase 1, Chapter 2
• Burning Gundam: Phase 5, Chapter 2
• DINN: Phase 4, Chapter 2
• Duel Gundam: Phase 1, Chapter 2
• Duel Gundam Assault Shroud: Phase 4, Chapter 2
• Forbidden Gundam: Phase 2, Chapter 3
• Freedom Gundam: Phase 3, Chapter 3
• Tallgeese III: Phase 1, Chapter 3
• Master Gundam: Phase 5, Chapter 2
• Raider Gundam: Phase 3, Chapter 3
• Strike Dagger: Phase 2, Chapter 3
• Strike Rouge: Phase 2, Chapter 3
• Calamity Gundam: Phase 2, Chapter 3
• CGUE: Phase 1, Chapter 3
• GAT-X102 Duel Gundam: Beat Phase 1, Chapter 2
• GuAIZ: Phase 1, Chapter 3
• Justice Gundam: Phase 2, Chapter 3
• LaGOWE: Phase 1, Chapter 2
• M1 Astray (Asagi): Phase 3, Chapter 2
• M1 Astray (Juri): Phase 5, Chapter 2
• M1 Astray (Mayura): Phase 5, Chapter 2
• ZnO: Phase 2, Chapter 2
• Providence Gundam: Beat at least 20 levels of Survival Mode