Ninja Massacre Achievement.

[JoKeZ]

Anyone got a full list of every Ambushes aka Fiend Challenge in this game. I did them all following the guid on IGN, but only the "Ninja Carnage" and "Ninja Slaughter" achievements are unlocked.

Thanks in advance for the help.

[Director Bison]

This was a trophy in the Vita version, so I got the list from here
https://www.playstationtrophies.org/game/ninja-gaiden-sigma-plus/trophy/43558-Ninja-Massacre.html

Ryu Chapter 3 - Airship (Need ID Card)
Ryu Chapter 7 - Archives Room (If you defeat Alma, this won't trigger)
Ryu Chapter 10 - Ritual Room (Available after Alma is defeated)
Ryu Chapter 12 - Peristyle Passage (long and huge hallway *cannot be missed*)
Ryu Chapter 12 - Aqueducts 4B (Bugs spawns, good essence farming place)
Ryu Chapter 15 - Zarkhan Stadium (After Doku is defeated and you activate switch)
Ryu Chapter 16 - Underground Passage (Cannot be missed)
Ryu Chapter 16 - DrawBridge Square (Cannot be missed)
Ryu Chapter 18 - Great Bridge Square (Must travel back to the city)
Rachel Chapter 5 - Monastery Annex (Back area behind Monastery *Hard to find*)
Rachel Chapter 8 - Military Gate (Don't fight Gamov or you'll lose this chance)
Rachel Chapter 14 - Hayabusa Village (Near Save and Muramasa's statue)

[juan.V1]

Must they all be cleared in the same playthrough?

[Scartho]

yes in the same playthrough