Here is the full list of all 39 SD GUNDAM G GENERATION CROSS RAYS achievements.
Acquire all achievements.
Level up an MS/MA unit to LV 75.
Register all MS/MA units to the MS/MA Profile.
Register all characters to the Character Profile.
Unlock all profiles.
Clear all stages.
Complete all quests.
Register all modifications to the Production List.
Complete Mobile Suit Gundam Iron-Blooded Orphans Gekko.
Complete all series in the Post Disaster (P.D.) timeline.
Register all warships to the Warship Profile.
Complete Mobile Suit Gundam Iron-Blooded Orphans.
Complete Mobile Suit Gundam 00 the Movie: A Wakening of the Trailblazer.
Complete all series in the Anno Domini (A.D.) timeline.
Complete Mobile Suit Gundam 00F.
Level up a scouted character to LV 75.
Complete Mobile Suit Gundam 00.
Reach 4,000 total kills.
Deal more than 100,000 damage points to an enemy unit in one battle.
Exchange a unit.
Complete Mobile Suit Gundam SEED C.E. 73 -Stargazer-.
Complete all series in the Cosmic Era (C.E.) timeline.
Complete Mobile Suit Gundam SEED Destiny.
Level up a Warship to LV 35.
Complete Mobile Suit Gundam SEED X Astray.
Complete Mobile Suit Gundam SEED Astray.
Complete Mobile Suit Gundam SEED.
Spend 1,500,000 Capital.
Complete Mobile Suit Gundam Wing: Endless Waltz.
Complete all series in the After Colony (A.C.) timeline.
Complete Mobile Suit Gundam Wing: Dual Story -G-Unit-.
Create a new custom character.
Complete Mobile Suit Gundam Wing.
Scout a new character.
A dispatched group successfully returns.
Design a unit.
Develop a unit.
Register a new modification to the Production List.
Complete a quest.