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