How do I make enemy AI with third person assets?

So I downloaded this package from the asset store,(https://www.assetstore.unity3d.com/#/content/1727) the animations and controls are absolutely amazing, but killing sentry turrets are very boring. I would like the soldier models from this pack to attack the main character, but I have no Idea how to do it. If someone has this package, or Is willing to download it, Could you write an enemy AI script using the soldier character to attack the main 3rd person character. Thanks