Here is the full list of all 46 SaGa Frontier Remastered achievements.
Completed the story lines of all eight protagonists.
Viewed Fuse's ending.
Had Ren, Doll, Rabbit, Silence, and Cotton join your party.
Switched to all mech chassis types.
Defeated the masked fiend in Dev 2.
Viewed Emilia's ending.
Visited all regions.
Viewed Lute's ending.
Had Capt. Hamilton join your party.
Viewed T260G's ending.
Had Leonard, ZEKE, BJ&K, Engineer Car, pzkwN, T260, and Rabbit join your party.
Had Thunder, Suzaku, Slime, Kylin, Red Turnip, Sei, Riki, and Cotton join your party.
Viewed Red's ending.
Had Zozma, White Rose, Ildon, Rei, Mesarthim, Time Lord, Nusakan, and Silence join your party.
Viewed Riki's ending.
Defeated Virgil in two turns or fewer.
Defeated Abyssbat.
Transformed into a monster and became Mariche.
Transformed into a monster and became a Dullahan.
Transformed into a monster and became a black dragon.
Had Fei-on and Mei-ling join your party.
Viewed Blue or Rouge's ending.
Purchased all items that can be purchased in exchange for LP.
Had Roufas, Annie, and Liza join your party.
Viewed Asellus's ending.
Received the gift of Rune Magic.
Swallowed by Tanzer for the first time.
Received the gift of Arcane Magic.
Performed a five-technique combo for the first time.
Received the gift of Shadow Magic.
Be possessed by Living Sword or Living Musket.
Transformed into a monster for the first time.
Used techniques 100 times.
Received the gift of Light Magic.
Mastered a spell for the first time.
Had at least 100,000 credits.
Sold gold for a certain amount of credits or more.
Used spells 100 times.
Had Rouge join your party.
Mastered a technique for the first time.
Glimmered a technique for the first time.
Infused a monster into a piece of equipment for the first time.
Had all recruitable characters join your party.
Had Red, Blue, Emilia, Riki, T260, Asellus, Lute, and Fuse join your party.
Purchased all types of items sold at shops.
Defeated the ultimate version of the boss battle chain.