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