Here is the full list of all 31 Death Mark achievements.
Looking forward to more terror descending upon you who has overcome all fear.
Frightened by the final showdown and the resulting fate.
Witnessed the Kannon Soldier's loathing demise.
Witnessed Miss Zoo's raging demise.
Witnessed Hanayome's regretful demise.
Witnessed the burning demise of Hanahiko's grudge.
Witnessed Red Riding Hood's sorrowful sentiment come to an end.
Witnessed Red Riding Hood's poisonous demise.
Learned of the repulsive deeds that gave rise to Red Riding Hood.
Frightened by the final showdown, but hopeful for the future.
Learned the history of the Kannon Soldier and the underground shelter.
Witnessed the Kannon Soldier come to a touching end.
Frightened by the elusive Kannon Soldier and the Mark.
Learned the insane history of Miss Zoo.
Witnessed Miss Zoo's madness come to an end.
Frightened by Miss Zoo's intense passion and the Mark.
Frightened by the mysterious tragedy that took place at Kujou Mansion.
Learned of the strange bond between Hanayome and her fiance.
Witnessed Hanayome's thoughts and feelings come to an end.
Frightened by Hanayome advancing and the Mark.
Learned the ghastly history of Shimi-O and the Honey Bee Family.
Witnessed Shimi-O's heartbreaking wish come to an end.
Witnessed Shimi-O's dissolving demise.
Frightened by the looming Shimi-O and the Mark.
Learned the horrifying history of Hanahiko.
Witnessed Hanahiko's intense spite come to an end.
Frightened by the creeping Hanahiko and the Mark.
Frightened by a talisman that holds Soul Power.
Frightened by the existence of Mark Bearers who share the same fate.
Frightened by the choice of advancing death.
Frightened by the realization of inescapable death.