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