Ys Origin/Achievements and trophies

Steam
There are 46 achievements for Steam.

General

 * || (Don't) Let the Bodies Hit the Floor || Enable "No-Fall" mode for the first time.
 * || Minimally Exceptional || Purchase your first blessing/upgrade.
 * || Count Your Blessings || Obtain all blessings/upgrades with any character.
 * || Truly Gifted || Obtain all blessings/upgrades with all characters.
 * || Thank You For Being a Friend || Give Roda Fruit to all of the Roos in the tower with every character.
 * || Cryptozoologist || Fight all enemies (excluding bosses) enough times to fill in all blank data entries for them in your monster journal.
 * || You Can't Blame a Girl for Trying || Thwart Epona's early-game challenges as both Yunica and Hugo.
 * || "Do You Work Out?" || Defeat the Wailing Blue end boss with all playable characters.
 * || Scolopendra Seriously Gigantea || Defeat the Flooded Prison end boss with all playable characters.
 * || Don't Start What You Can't Finish || As Yunica, persevere against an unbeatable foe in the Guilty Fire.
 * || My Fact Is Truer Than Yours || As Hugo, emerge victorious during your emotional encounter in the Guilty Fire.
 * || Some Like It Hot || Defeat the Guilty Fire end boss with all playable characters.
 * || Teleport 2 Me || Defeat the mid-boss in Rado's Annex as both Yunica and Hugo.
 * || We Will Rock You || Defeat the Silent Sands end boss with all playable characters.
 * || Totally Fact Up || As Hugo, obtain ultimate power... then let it go to waste completely.
 * || Never Mind the Hammer || Defeat the Blighted Blood end boss with all playable characters.
 * || Stay Down || Thwart the Darkling lackeys in the Demonic Core as both Yunica and Hugo.
 * || Three's a Crowd || Defeat the mid-boss in the Hall of Reflection with all playable characters.
 * || Bursting at the Seams || When playing as neither Yunica nor Hugo, completely refrain from using Burst until the final encounter.
 * || Dirty Little Secret || Defeat the Demonic Core end boss with all playable characters.
 * || Who Needs Magic? || Complete the game as Yunica.
 * || It's a Fact: Magic is Awesome || Complete the game as Hugo.
 * || Now the Gloves Come Off || Complete the game on Very Easy difficulty with any character.
 * || Average Joe || Complete the game on Easy difficulty with any character.
 * || Tuff Enuff || Complete the game on Normal difficulty with any character.
 * || You're the Best Around || Complete the game on Hard difficulty with any character.
 * || Glutton for Punishment || Complete the game on Nightmare difficulty with any character.
 * || You've Made Your Point || Complete the game on Nightmare difficulty with all characters.
 * || Kid Gloves || Complete Boss Rush on Easy difficulty with any character.
 * || Everyday Glory || Complete Boss Rush on Normal difficulty with any character.
 * || You Bet Your Life || Complete Boss Rush on Hard difficulty with any character.
 * || Grace Under Pressure || Complete Boss Rush on Nightmare difficulty with any character.
 * || Caress of Steel || Complete Boss Rush on Nightmare difficulty with all versions of all characters.
 * || Just Barely Breathing || Complete any Arena stage with less than 10 HP.
 * || Untouchable || Complete four or more consecutive stages in Arena Mode without taking any damage.
 * || Follow the Money || Spend more than 2,000,000 SP in the Bonus Shop.
 * || Another Part of Me || Unlock any character's EX version.
 * || No Stone Left Unturned || Unlock every character's EX version.
 * || Buyin' Out the Bar || Purchase everything available in the Bonus Shop.
 * || All Along the Watchtower || Unlock all other achievements.
 * }
 * || It's a Fact: Magic is Awesome || Complete the game as Hugo.
 * || Now the Gloves Come Off || Complete the game on Very Easy difficulty with any character.
 * || Average Joe || Complete the game on Easy difficulty with any character.
 * || Tuff Enuff || Complete the game on Normal difficulty with any character.
 * || You're the Best Around || Complete the game on Hard difficulty with any character.
 * || Glutton for Punishment || Complete the game on Nightmare difficulty with any character.
 * || You've Made Your Point || Complete the game on Nightmare difficulty with all characters.
 * || Kid Gloves || Complete Boss Rush on Easy difficulty with any character.
 * || Everyday Glory || Complete Boss Rush on Normal difficulty with any character.
 * || You Bet Your Life || Complete Boss Rush on Hard difficulty with any character.
 * || Grace Under Pressure || Complete Boss Rush on Nightmare difficulty with any character.
 * || Caress of Steel || Complete Boss Rush on Nightmare difficulty with all versions of all characters.
 * || Just Barely Breathing || Complete any Arena stage with less than 10 HP.
 * || Untouchable || Complete four or more consecutive stages in Arena Mode without taking any damage.
 * || Follow the Money || Spend more than 2,000,000 SP in the Bonus Shop.
 * || Another Part of Me || Unlock any character's EX version.
 * || No Stone Left Unturned || Unlock every character's EX version.
 * || Buyin' Out the Bar || Purchase everything available in the Bonus Shop.
 * || All Along the Watchtower || Unlock all other achievements.
 * }
 * || Grace Under Pressure || Complete Boss Rush on Nightmare difficulty with any character.
 * || Caress of Steel || Complete Boss Rush on Nightmare difficulty with all versions of all characters.
 * || Just Barely Breathing || Complete any Arena stage with less than 10 HP.
 * || Untouchable || Complete four or more consecutive stages in Arena Mode without taking any damage.
 * || Follow the Money || Spend more than 2,000,000 SP in the Bonus Shop.
 * || Another Part of Me || Unlock any character's EX version.
 * || No Stone Left Unturned || Unlock every character's EX version.
 * || Buyin' Out the Bar || Purchase everything available in the Bonus Shop.
 * || All Along the Watchtower || Unlock all other achievements.
 * }
 * || Another Part of Me || Unlock any character's EX version.
 * || No Stone Left Unturned || Unlock every character's EX version.
 * || Buyin' Out the Bar || Purchase everything available in the Bonus Shop.
 * || All Along the Watchtower || Unlock all other achievements.
 * }
 * || Buyin' Out the Bar || Purchase everything available in the Bonus Shop.
 * || All Along the Watchtower || Unlock all other achievements.
 * }
 * }

Secret

 * || The Mark of the Claw || Unlock Toal by completing the game as Yunica or Hugo.
 * || The Uncivil War || As Hugo, defeat Toal; as Toal, defeat Hugo.
 * || The Prodigal Son || Defeat the final boss and obtain the game's true ending.
 * || Pikkardon Don't Care || Fight and defeat Pikkardon in Arena Mode.
 * || Only a Ginger Can Call Another Ginger "Ginger" ||
 * || ...And All I Got Was This Lousy T-Shirt || Unlock Yunica's schoolgirl outfit.
 * }
 * || Only a Ginger Can Call Another Ginger "Ginger" ||
 * || ...And All I Got Was This Lousy T-Shirt || Unlock Yunica's schoolgirl outfit.
 * }
 * || ...And All I Got Was This Lousy T-Shirt || Unlock Yunica's schoolgirl outfit.
 * }

PlayStation / Xbox
There are 31 trophies for PlayStation 4 and PlayStation Vita and 30 achievements for Xbox One.