In the base game, each stage has its own reverb, but only the character voices go through it. Punches, kicks, whiffs and most other sound effects stay completely dry.
This mod sends those sounds through the same stage reverb the voices use, so the whole fight sounds like it is happening in the same place.
Installation:
Go to TEKKEN 8\Polaris\Content\Paks\ and create a folder named mods if it doesn’t exist. Extract the file into mods.
To uninstall, delete the file.