17. DLC: Underground Walkthrough
The main achievement you will be working on is the Beast Below for reaching Underground Rank 40. This will easily take the longest and all of the other achievements can be unlocked on the way. It's completely up to you how you want to level up. You can grind through Hard difficulty by yourself which is very manageable and add more Directives as and when they unlock, play with randoms or friends in Challenge mode, or play with a skilled group of randoms or friends on Heroic.
To access the Underground, you'll need to be Level 30 in the core game and have completed the General Assembly mission. Once these requirements have been met, you'll be contacted by Captain Benitez who will ask you to investigate a missing person at a Quarantine Centre This will reveal a new mission on the map in Tenderloin. Make sure your gear and weapons are all good to go and then set a waypoint for the mission.
Secure Quarantine Centre
Once you arrive, an explosion will go off in the building causing devastating damage and killing everyone inside. The area will immediately go dark as the smoke clouds everything around. Rikers will ambush you from the east but thankfully, they are only regular Level 30 enemies. As you take down more and more enemies, Veterans will eventually spawn too. A Named Elite will spawn eventually but again, at this stage of the game, he's fairly easy to take out. Once he goes down and the area is secure, pick up the cell phone the Named Elite dropped to complete the mission.
Go to the Tactical Operations Centre
Head for the newly made entrance at the back of the BoO next to the Rewards Claim Vendor. Head downstairs and have a look at the two vendors here to see if there's anything you want to buy. Then, when you're ready, head down another set of stairs and into a lift. Once out of the lift, you'll discover the Underground. A cut scene will commence and an achievement will unlock:
Unlocked by 32,012 tracked gamers (100% - TA Ratio = 1.40)
Head to the Tactical Operations table to begin a mission where you'll be forced to start a One-Phase mission without any directives on Normal difficulty.
The End Is NY
You'll be tasked with finding the location of Downbeat's GPS. The level-layout should be the same as the video's. Proceed through the mission and when you reach a restock box, always open up your big map to check the area for Intel. Complete the mission and then head back to the TOC to begin your grind to Underground Rank 40.
If you're not overly-fussed about getting the absolute best gear possible, you can just level up to 40 through hard missions either solo or with other players. You can net 6000 XP for doing a hard difficulty mission with 5 directives enabled with three phases. Even doing just two, which you'll be doing for a while until at least level 35, will net you 4000 XP with 5 directives. It's completely up to you how you want to level up but either way, the grind is pretty long.
On your way through the grind, you'll net these achievements:
Unlocked by 4,736 tracked gamers (15% - TA Ratio = 3.66)
Unlocked by 17,821 tracked gamers (56% - TA Ratio = 1.88)
and then eventually once you hit level 40:
Unlocked by 3,201 tracked gamers (10% - TA Ratio = 4.45)
This one is a tough achievement to nail but in a group of four, with people communicating and being organised in terms of skills. I'd definitely recommend getting a group together for this either with friends or via a co-op session on the site. Decide who wants to use what skills first of all, discuss who has what gear (incase someone has Reclaimer or Tactician's Authority), set up the mission and roll out.
Combined with the hints and tips page for the DLC part of the walkthrough, I've also added commentary to the following video on the best tips and tricks to help you succeed:
Once you've nailed the mission, this achievement will unlock:
Unlocked by 3,427 tracked gamers (11% - TA Ratio = 4.31)
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