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