Bronze

Story Mode : Federation Completed
All Federation stories have been completed. (Any difficulty level)

Story Mode : Zeon Completed
All Zeon stories have been completed. (Any difficulty level)

Free Mission : 100 Missions Completed
100 Free Missions have been completed. (Any difficulty level)

First Mission Completed
First Mission has been compmeted. (Any difficulty level)

Play time exceeds 30 hrs.
Total play time exceeds 30 hrs.

Prize Collector
Acquire 500 mission clear prizes.

Firearm Collector
Acquire all firearms.

Combat Weapon Collector
Acquire all combat weapons.

Shield Collector
Acquire all shields.

Complete Mobile Suit
Acquire all Mobile Suits.

Million Mark
'Achieve score of 1,000,000'

Star Pilot
Pilot level 50.

Combat Skill 99
Achieve Combat Skill of 99.

Firing Skill 99
Achieve Firing skill of 99.

Defense Skill 99
Achieve Defense Skill of 99.

Pilot skill 99
Achieve Pilot Skill 99.

1000 Shot down
Shoot down 1000 enemies.

Star Platoon
Clears 50 missions in Co-op Mode.

First Team Battle Victory
Win a Team Battle.

First Battle Royal Victory
Win a Battle Royal.

Team Battle: 50 enemies shot down.
Defeat 50 enemies in Team Battle.

Battle Royal: 50 enemies shot down
Defeat 50 enemies in Battle Royal.

Silver

Story Mode : Federation Completed with HARD
All Federation stories have been completed on HARD.

Story Mode : Zeon completed with HARD
All Zeon stories have been completed on HARD.

Free Mission : 500 Missions Completed
500 Free Missions have been completed. (Any difficulty level)

Parts Collector
Acquire all parts.

Ace Pilot
Pilot level 100.

5000 Shot down
Shoot down 5000 enemies.

Ace Platoon
Clears 200 missions in Co-op Mode.

50 Team Battle Victories
Win 50 Team Battles.

50 Battle Royal Winners
Win 50 Battle Royals.

Team Battle: 100 enemies shot down.
Defeat 100 enemies in Team Battle.

Battle Royal: 50 enemies shot down.
Defeat 100 enemies in Battle Royal.

Gold

All Missions Completed
All Story Mode Missions and Free Missions have been completed. (Any difficulty level)

New Type
Pilot level 200.

New Type Platoon
Clears 500 missions in Co-op Mode.

Platinum

All Trophies Completed
All Trophies have been acquired.

Secret

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Unknown

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Unknown

Source