Tannis has several journals scattered around the Highlands that she'd like you to collect for her. The journals are pretty interesting and require equally interesting methods to get them.
- XP: 2611
- Money: 4 Eridium
- Gear: N/A
The first Journal is in the Northern most part of the Highlands. It's not particularly hard to find but it is out in the water beyond the boundaries. If you stay out there too long, you'll die so find out where it is, sprint for it, grab it, and sprint back.
The second journal is pretty tough. It requires you to go to the bridge that spans the dry river. Standing on top of the bridge, you need to go down the stairs to the scaffolding just under the bridge. Walking along the scaffolding (watch your step), you'll come to a room with a shut door that houses the journal. The only way in is from the east side of the room and to get in, you have to do some fancy jumping. While you might think you want to try to jump to the doorway from the closest corner, you actually want to walk out on the long steel beam on the right. It goes almost all the way over to intersect with another steel beam that'll take you to the room. Walk out on the first, make a short jump to the second and carefully walk into the room for some loot and the second journal.
The third journal is going to be near the large underground stalker nest inside a wagon. Shoot the hanging pods inside the cage and the back door will drop open. Walk in and grab the ECHO.
The final recording is in the Hyperion base that you may have visited doing the "This is only a test" mission for the people of Overlook. Go to the base and head to the back of the base. You'll find the platform with the control for the mortar and if you continue to the right, you'll see a part of the platform with no railing. Go this way and you'll find a rocky path that spirals upward to the top level of the base. Go up and kill the few Combat Engineers in the area and follow the path until you reach the top of the base. At the top, there will be a bridge leading across to the other side of the base.
Sneak in between a couple of buildings and you'll land on a rooftop with a large doorway guarded by electricity. Inside is your journal. To get it, look above the door and you'll see a pole sticking out of the roof. Connected to the pole will be a large cable running all the way up to the large column behind the building. Attached to this column will be a fuse box that you can shoot. Shoot it out to lower the fence and then go inside to collect the last journal.
When you are ready to leave, jump down and hop into your 'Ride. Head back to Tannis in Sanctuary and hand this in for your reward.