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