Flintlock: The Siege of Dawn

There are five total Enki feathers to collect for this achievement. All of them are posted in the walkthrough listed in the Road Map, or you can find them on their own page HERE. These will emit a blue light shooting up into the sky signaling their location, so they're easy to find, but the trick is to get to them as they are usually high up on cliffs or towers. You'll usually find a skull that will open rifts to travel up to it.