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