Hey there!
So i’m making a horror game and i really want the sounds to be as immersive as possible, like a classic game i used to love and play, until the dawn.
Here’s an example of what i’m looking for:
You can hear how the ‘oof’ sound sounds so echoey and 3D.
Any help on how i can achieve this type of effect would be appreciated!
If you go to SoundService inside the game, you can find a lot of properties for changing the sound of the game, like a mountain based sound, caves, mines or a bathroom. 
Just mess around with it and see if the right property will determine the echo.
Thank you so much!
Would you also be able to tell me what ‘DistanceFactor’ also does by any chance?
Sure! DistanceFactor is pretty much how long is the audio going to be heard from, like 3.33 meters currently without messing with anything. If you keep it at inf, you have everyone and every single stud hear the sound of what is inside the sound property.
DopplerScale is like a 3D sound for all sounds in the game, same with the inf amount of sound put into the game, like a pitch.
Article about it: SoundService | Documentation - Roblox Creator Hub
Doppler: SoundService | Documentation - Roblox Creator Hub