Sable

This achievement is available to unlock as soon as you leave Ewer and reach the second area of the game. Your mission at the time is to meet Machinist Utarii at the Burnt Oak Station camp. You can ignore this and go straight for the downed ship "The Dunboyne".

The ship is located in the NE part of the map and is huge. The entrance to the interior of the ship is found on the right side of the ship. You need to climb onboard. The first room should be easy to navigate through. In the second big room there are several floors.

• Head up to the second floor. On this floor there are two empty power stations. There is also one battery that you need to move around.

• First plug it into the power station connected to a pair of large blades. When this is active use the blades to enter a room and in there push the button found there. This makes a drawbridge activate in the big room.

• Now return to the battery and retrieve it. Take the battery over the drawbridge and use it on the next power station. This should activate the door close by and when you enter the achievement should unlock!

Video for those that like those better.