Ace Combat: Assault Horizon
51 Achievements
74-90h
PS3
Sierra Hotel
Obtained all Trophies. Details for this achievement will be revealed once unlocked
1.3%
How to unlock the Sierra Hotel achievement in Ace Combat: Assault Horizon - Definitive Guide
KingUbu
Collect all other trophies to unlock. Good hunting.
Side note: Sierra Hotel is military slang for “You’re/That was awesome!”