Here is the full list of all 54 Dragon's Dogma 2 achievements.
Experienced the end of the cycle.
Led the people to safety in the unmoored world.
Acquired a pawn badge.
Overcame all the trials of the unmoored world.
Became Sovran of Vernworth.
Obtained Dragon's Dogma.
Helped the gigantus walk again.
Witnessed the unmoored world.
Took flight on griffin wing a second time.
Summoned a harpy, grabbed hold, and took flight.
Witnessed a brawl break out in your dwelling among your admirers.
Earned the affections of 50 people.
Accomplished a miracle for several people all at once.
Discovered 50 dungeons.
Defeated the headless horseman.
Petrified a medusa.
Acquired a preserved medusa head.
Decapitated a medusa.
Strengthened a weapon in wyrmfire.
Crossed a cyclopean bridge.
Acquired every maister's teaching.
Changed your vocation to warfarer.
Changed your vocation to magick archer.
Reclaimed your items from the scavenger who stole them from you.
Reached Drabnir's Grotto.
Soaked in the hot spring.
Defeated the gigantus in a short span of time.
Returned to Agamen Volcanic Island.
Found a solution to every conundrum posed by the goddess of riddles.
Collected 80 Seeker's Tokens.
Changed your vocation to mystic spearhand.
Reached Dragonsbreath Tower.
Raised a person's affinity to the maximum.
Changed your vocation.
Changed your vocation to trickster.
Reached the maximum rank in a vocation.
Boarded the phantom oxcart.
Grilled every type of meat during the night and day.
Passed through the gate at the border.
Used illicit means to pass through the gate at the border.
Entered the rose chateau.
Attended a palace masquerade in formal raiment.
Restored the dead to life at a morgue or charnel house.
Purchased a dwelling of your own.
Used a Wakestone to restore the dead to life.
Used a Ferrystone.
Set a pawn quest.
Revived two pawns simultaneously.
Taught your pawn a specialization.
Boarded an oxcart.
Arrived in Vernworth.
Went camping.
Regained your memories of receiving the Arisen's charge.
Escaped the bonds of slavery.