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