SweetFX version 2, has 2 dll files in it.
You need the one that says ReShade64.dll and the other 3 files only.
the other 3 files that is needed are
1)SweetFX.fx
2)ReShade.fx
3)and the SweetFX folder.
These 4 files need to be placed manualy in the folder, where the games executable file is.... for example: FarCry4.exe ....or FarCry4(64) or whatever the name is.
DO NOT copy the ReShade32.dll file in the game, probably it will crash it.
And then you can open the SweetFX_settings.txt, to activate or deactivate the effects that you like.