Here is the full list of all 18 Death Coming achievements.
Accumulated 5 vases missed
Spotted all Death Traps in every Stage
Trigger the Incident of Alien Robot during the Massacre.
Kill all the marked characters
Waken Werewolf, Dinosaur, Vampire and Pharaoh in the Museum Stage.
Successfully launch the missile in Act 2
Clear all Acts
Discovered by Angels for 10 times
Trigger the gorilla plot at the Pier
Complete a 5-combo kill
Complete a 10-combo kill
Kill the Matron of the Villa area
Kill the FIRST person during Reaper work.
Achieve the highest rating in all Acts
Kill all passengers on the train in Snow Mountain Stage.
Kill 50 Thieves in Bonus 2.
Kill the 8 starred characters in Act 7 and trigger the curtain call.