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