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