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