There are many special achievements in "Silent Hill 2: Remastered Edition (SILENT HILL 2)". The 2001 Party is one of them. The requirement to achieve this achievement is to view all classic endings, that is, leaving, Maria, In water, rebirth and dogs.
How to get the 2001 party achievement in Silent Hill 2
2001 Reunion
View all classic endings
There are eight endings in the game, namely leaving, Maria, in the water, rebirth, dog, UFO, tranquility and bliss
Just watch Away, Maria, In the Water, Rebirth, and Dogs.
If you are playing for the first time, it is recommended to play the game without paying attention to any ending. Familiarize yourself (re)with the story, maps, key items, and puzzles.