Here is the full list of all 44 Fate/EXTELLA LINK achievements.
Acquired all other Trophies.
Cleared 32 Extra Strages.
Cleared all Extra Stages.
Combined two Install Skills.
Combined two combined Install Skills.
Cleared Stages 1 through 27 on Very Hard.
Executed 8 Rush Attacks in one stage.
Raised three Servants' Bond levels to MAX.
Unlock 75% of the Gallery.
Unlock 100% of the Gallery.
Unlock 100% of the Mystic Codes.
Unlock 100% of the Install Skills.
Cleared 24 Extra Stages.
Used Karna's "Oh Brahma, Cover the Earth" or "Oh Brahma, Split the Earth" skills.
Defeated Karna as Arjuna.
Cleared 16 Extra Stages.
Defeated two bosses in the "EX: Facsimile Fortress Nightmare" stage.
Cleared eight Extra Stages.
Raised a Servant's Bond level to MAX.
Defeat Artoria as Lancelot.
Unlock 50% of the Gallery.
Cleared Stage 27 and viewed the ending.
Defeated Iskandar as Darius III.
Cleared one Extra Stage.
Chose to listen to Archimedes.
Maxed out an Install Skill.
Cleared Stage 19 and viewed the ending.
Earned three Mystic Codes for strengthening bonds or clearing stages.
Earned a Mystic Code for strengthening a bond or clearing a stage.
Cleared stage 13 or 14.
Cleared Stage 11.
Unlock 25% of the Gallery.
Cleared Stage 18 and viewed the ending.
Cleared Stage 15 or 16.
Defeated Scathach as Cu Chulainn.
Crafted a Mystic Code.
Cleared Stage 9 or 10.
Cleared Day 3.
Cleared Day 2.
Cleared Day 1.
Activated Moon Drive four times in one stage.
Gained 1000 KO's in one stage.
Used a Noble Phantasm twice in one stage.
Viewed the event in which Charlemagne first appears.