(8) Getting to the DRB gang's headquarters
The only thing left now is to get to the rival gang territory in order to locate weapon delivery. My advice is to avoid at all costs force solutions, because if you are noticed by any enemy, your secondary goal will fail. But you can prevent this situation easily by clearing entire Derelict Row from enemies before you start completing the quest for Jenny. You previous actions won't count, even if they were hostile against DRB gang members. When you got rid of all enemies, scroll down to the description of Step 9. If you want to play fair, then read the entire description below, which shows how to reach a weapon cache unnoticed.
Map legend: 1 - Western corridor; 2 - Main path to the gang's headquarters; 3 - External staircase leading to the building's roof.
First you have to get to the square adjacent to the gang's hideout and there are three ways to do it. First option is to use a passage located west from the gang's hideout - you've found a crossbow there #1. Turn right and you should see few large crates in front of you #2.
Do not destroy them yet, because it would alarm your enemies. It is better to stand between the crates and attack first opponent #1 with a stun weapon. Move away and after few moments do the same with the second guard. Now move or destroy the crates. Bypass guards' corpses and open the door leading to the square #2.
A second option is to take a main path leading to the gang hideout, located south from it #1. Eliminating guard(s) is not recommended, so better use a passage located to the left from a container #2.
A third option, definitely the best, is to attack or surprise gang members from above. This solution is good because your opponents are not good at finding enemies which are above them. In order to implement this option find a narrow alley to the south-west from the gang headquarters #1. Use a ladder and start climbing using an external staircase #2 along your way.
After reaching the top, open the door and enter the building #1. There is only one path there - follow it, ignoring closed gate on your way. You have to reach a new door #2, leading to the roof adjacent to the gang headquarters.
Note that you're now above your opponents - you can act in several ways here. A better solution is to eliminate them one by one with stun or tranquilizer weapon #1. If you do not want to eliminate them or you do not have proper equipment, just focus on getting down. You can use in this case an augmentation - Icarus Landing System or jump over nearby objects #2 in order to reach one of the external staircases.
Map legend: 1 - Main entrance to the gang headquarters; 2 - Descent to the sewers.
After you've reached the square, you can start choosing your way to get into the gang' headquarters. There are two main paths leading inside. A first one is through the front door. I do not recommend this option, because you would have to cross almost entire location occupied by enemies.
It is better to go to the east now #1 and look around searching for a descent to the sewers #2. Passing the sewers not only allows you to avoid many opponents but also to go out to the surface near the weapon cache you're looking for.
Regardless of your decisions, you have to watch out for the enemies in this area. I suggest eliminating them one by one, not taking too much risk (a silent weapon + pulling away corpses) #1. You can also use a camouflage or distract gangsters in different ways. If you going to eliminate enemies, remember to examine their corpses after getting rid of them. You'll find a PDA with combination 0187. This code might be use then to open the eastern armory #2.
(9) Finding the weapon cache
Map legend: 1 - Exit from the sewers; 2 - Weapon cache.
I assume that you used the only correct option, which is a path leading through the sewers. Head north, and then use a narrow passage blocked by a barrel #1. Save the game #2, and that's because the sewers are guarded by few opponents.
After using the first tunnel you have to choose your way to the destination site. A first option is to use next narrow passage, block by two barrels this time #1. Unfortunately it is possible only if you have an augmentation which makes Jensen immune to gas (Implanted Rebreather). Otherwise you can get killed by toxic vapors #2.
If you've managed to pass by the toxic tunnel, you should be able to get near the ladder #1. Use it and notice that you're now in the fenced area with several homeless people. Search for barrels, which you can jump on #2, and a container - next point on your "trip".
Reward: 100 experience points.
Make sure that none of the enemies comes in your direction and jump over the fence #1. Turn a little bit left and head towards fenced area with small hole #2.
A second option is to ignore a tunnel with poisonous gas and in this case you should start with eliminating a bandit who patrols this area #1. Luckily he can be surprised easily. Use a catwalk now and turn left #2.
As you probably noticed, there are three opponents located behind the barricade #1. If you have a camouflage, you can try to bypass them. Otherwise you have to eliminate them. It is best to attack them one by one, taking a cover after every successful action #2. Fortunately a secondary goal connected with hiding shouldn't fail even if they start shooting at you.
Make sure that you've eliminated bandits and jump over the barricade. After few moments you should reach a ladder #1. Use it and you'll find yourself in the fenced area #2.
Reward: 100 experience points.
You can now focus on searching for a weapon cache and you should already see an advance of using sewers. You do not have to explore gang's hideout at all. Instead just turn around and find a hole in the wall, which is blocked by barrels (screen above). Move barrels and go inside - you'll find yourself near the weapon cache.
Reward: 750 experience points.