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