Leave the mission area whilst escaping the mission "Destroy Main Facility" triggering a unique cutscene with Sumika
Complete the mission "Infiltrate Amber Base"
Complete the mission "Search and Destroy"
Complete the mission "Rescue the Allies"
Complete the mission "Raid the Laboratory"
Complete the mission "Disrupt Shipping Lanes"
Complete the mission "Capture the VIP"
Complete the mission "Protect the VIP"
Complete the mission "Destroy Main Facility"
Complete the mission "Confrontation"
Complete the mission "The Underground Maze"
Complete the mission "Destroy Receiving Base"
Complete the mission "Destroy the Detachment"
Complete the mission "Intercept Enemy Units"
Complete the mission "Destroy Secret Base"
Complete the mission "The Final Battle" and complete the game
Complete the game without failing a single mission
Reach rank 45 in arena by defeating Snake
Reach rank 35 in arena
Reach rank 25 in arena
Reach rank 15 in arena
Reach rank 5 in arena
Defeat Necron and reach rank 1 in arena
Obtain 5,000,000 Coam
To master this set you need to import a save - Details in forum post
Import a save from Armored Core that has all 21 hidden/mission reward parts in your garage
Purchase all parts from the store, obtain all arena parts and have all parts from the original game
Reach 100% completion
Destroy all enemies during the mission "Infiltrate Amber Base"
Destroy the broadcast tower during the mission "Search and Destroy"
Destroy all enemies during the mission "Raid the Laboratory"
Complete the mission "Disrupt Military Units"
Complete the mission "Search the Facility"
After the timer starts in the mission "Raid the Laboratory" escape before drops below 35 seconds
Destroy 15 enemies during the mision "Disrupt Shipping Lanes"
Destroy 100 enemies during the mission "Destroy Main Facility"
Destroy all enemies during the mission "Search the Facility"
Destroy all enemies during the mission "The Underground Maze"
Destroy 75 enemies in the mission "Destroy Secret Base"
Escape the mission "Destroy Secret Base" with more than 50 seconds remaining on the clock