NiGHTS into dreams...
13 Achievements
6-8h
PS3
Merry Christmas!
Clear Spring Valley (Christmas).
6.3%
How to unlock the Merry Christmas! achievement in NiGHTS into dreams... - Definitive Guide
To unlock Christmas NiGHTS, you must complete both Claris' and Elliot's story lines. Select Christmas Dreams on main menu. Select either character (it doesn't matter) and complete the level. Grade doesn't matter. Beat the boss, achievement unlocked.