For IW4 Singe player please read our install options. It will tell you to open our client executable. Anyhow there is also a thread you should read because you do not seem to be aware of our install instructions: IW4x Singleplayer Install Guide
For IW4 Singe player please read our install options. It will tell you to open our client executable. Anyhow there is also a thread you should read because you do not seem to be aware of our install instructions: IW4x Singleplayer Install Guide