To open the last door, which is purple and next to the alcove, fit all of the metal pieces into their proper position in the alcove. The door will open and Brink will run off again. Enter the room. There is nothing to do in here yet but look at the controls and the alien device. Keep going up, go over the bridge, and turn on the last lightbridge. Go back to the crypt in the tomb spire, and bring the alien back to life. Maggie will take over, and you will be able to understand the alien. Talk to it about EVERYTHING. When you talk to it about the missing eye piece, the alien will give you an engraved rod. Now go back to the map spire, and go to the map room. On the control panel in the middle of the room, punch in the sequence from the creator's engraved rod. The map will show you where the missing eye part is. Go back towards the tram and enter the nest. Go through the door on the right and go to the beach. The eye piece is located on the striped rock. Take it and return to the cathedral spire. Brink will be there waiting for you and he will steal all of your life crystals. You need two life crystals to make the eye machine work. Do not put the eye piece in the machine. You will need it to bribe Brink in order to get your life crystals back. Go to Brinks relic in the tomb spire. Talk to Brink about the eye piece, and make a deal with him.
