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