Gargoyles make good vantage points. Use your Grapnel Gun to shoot a Grappling Hook so that you can climb onto the Gargoyle and have a good vantage point

Vantage points provide concealment and a tactical advantage over the enemies.

Use Vantage Points to survey and study enemy movement while avoiding detection. Used in combination with Detective Vision, these provide the ideal position to identify isolated enemies and strategically plan how to take these out. If discovered by armed enemies, use F (PC) to quickly swing between different Vantage Points in order to break contact.