There are many endings in "Silent Hill 2: Remastered (SILENT HILL 2)", there are eight in total, namely leaving, Maria, in the water, rebirth, UFO, dog, bliss and tranquility, the ending in the water The first requirement is to check Angela's knife regularly throughout the game.
How to achieve the underwater ending of Silent Hill 2
"In the Water" Ending
Requirements:
Check Angela's knife periodically throughout the game
Does not heal immediately, maintain moderate health
The "In water" ending is 2/3 of the main ending and unlocks the "Only Way Out" achievement. This was considered a bad ending.