Manual Installation
Drag and drop files with replacement, path to each file is made with folders.

Installation through Fusion Overloader
If you have installed Fusion Fix mod, then drop "update" folder into the game folder and that's all you need to do, start your game and check if mod is working.

Optional Content
If you want something more than main release can offer, you should check this out, both Fusion Overloader and manual installations are provided.