DNET: Update documentation (#2483)

src/Documentation/doc/en/advanced/bitnode_recommendation_comprehensive_guide.md

@@ -33,6 +33,7 @@ Some BitNodes unlock new mechanics, while others improve or change original mech
   - BitNode 11: It gives some rewards, but they are not very interesting.
   - BitNode 12: Grant free NeuroFlux Governor (NFG) based on the Source-File level.
   - BitNode 14: Enhance IPvGO.
+  - Bitnode 15: Enhanced darknet.
 
 Some mechanics synergize well with other mechanics. For example, in order to create a gang outside of BitNode 2, you need to "farm karma" (more about this later), and Sleeves can help you do it faster.
 
@@ -192,6 +193,18 @@ The last reward is pretty interesting. If you can consistently win several games
 
 This BitNode's multipliers are fairly harsh, but IPvGO's multipliers are buffed significantly. If you use IPvGO, even a slightly improved version of the tutorial script will help you complete this BitNode without much trouble.
 
+## Bitnode 15
+
+This bitnode increases the size and depth of the dark net. This increases the reward potential from the darknet in general. Since there are more servers, there is more opportunities for reward caches, and more ram to run phishingAttack for money and promoteStock for boosting a stock with a good forecast. The Source-File's rewards:
+
+- Permanently unlock the TOR router and DarkscapeNavigator.exe, and unlock the full dark web on all Bitnodes.
+- Your charisma level increases job salary and rep gain; increased authentication speed
+- Your charisma level increases faction work rep gain; increased xp and money gained from .caches.
+
+The first Source-File also allows the use of the dark net to get The Red Pill from the final lab in all Bitnodes (except for BN8), which in some cases may be quicker than unlocking it via Daedalus.
+
+However, the complexity of dealing with the deep 'net, and the number of different puzzles to solve, make BN15 not a simple bitnode to approach. Before tackling BN15, you will want to experiment with the basic version in other nodes to get a feel for it.
+
 # Order advice
 
 ## The first choice
@@ -221,6 +234,8 @@ BitNode 14 enhances IPvGO. IPvGO is _not_ locked behind this BitNode. It's avail
 
 BitNode 9 and BitNode 13 unlock HackNet server and Stanek's Gift, respectively. They are powerful mechanics that buff other mechanics, but these BitNodes are extremely hard. You should prepare carefully before entering them.
 
+Bitnode 15 enhances the dark net. Darknet is _not_ locked behind this BitNode. It's available at the start of the game. You can unlock it by buying the DarkscapeNavigator.exe from the terminal once you have a TOR router. If you haven't experimented with the mechanic, you should do so before entering BN15. You _can_ complete BN15 with a simple script that uses dnet.packetCapture to get passwords and copies itself around, but it will be much slower than going through and solving a good fraction of the authentication puzzles.
+
 ## Challenging BitNodes
 
 It's hard to recommend the priority of these BitNodes. They offer unique challenges. Some people can tackle them as early BitNodes without any problems. Some people complete them at the end, for the sake of completion. Some people despise and never touch them.

src/Documentation/doc/en/advanced/bitnode_recommendation_short_guide.md

@@ -62,7 +62,11 @@ BN13 introduces [Stanek's Gift](stanek.md), a powerful augmentation that can pro
 These bonuses are versatile but not enough to offset the challenge of the BitNode itself.
 
 BN14 is a relatively new BitNode focused on [IPvGO](../programming/go_algorithms.md).
-Automating the mechanic is challenging but it provides a wide variety of bonuses.
+Automating the mechanic is challenging, but it provides a wide variety of bonuses.
+
+BN15 expands on the darknet mechanic unlocked via the DarkscapeNavigator.exe program.
+It encourages solving a number of practical problems (e.g. passing data around between scripts, handling servers disappearing) as well as solving many small programming puzzles to get servers' passwords. The deeper levels of the darknet have significantly more complex puzzles.
+It provides a variety of useful bonuses.
 
 ## Save these for later
 

src/Documentation/doc/en/advanced/bitnodes.md

@@ -251,3 +251,20 @@ and increases the reputation converted to favor for winning two games in a row t
 - Level 1: 1000 rep to favor
 - Level 2: 1500 rep to favor
 - Level 3: 2000 rep to favor
+
+### Bitnode 15: The Secrets of the Dark Net
+
+Delving into the uncharted and secretive parts of the internet comes with the promise of freedom from oppressive authority and surveillance. Leaving stability behind and turning to the dark web comes with risks... but also rewards. Unlike the traditional network of servers, the "dark" net is a constantly shifting, complex, unreliable place
+where servers can move or disappear at any moment. Long-distance communication is often impossible, requiring scripts to be self-sufficient and durable, and spread themselves to stay alive.
+
+If you can take advantage of the darknet servers' weak passwords and leaky logs, you will be able to gain access to the deepest parts of the darknet and its secrets. In this Bitnode, the Daedalus faction has not yet found and monopolized the fabled Red Pill augmentation.
+Legends say it can be found somewhere, out there in the dark...
+
+Destroying this BitNode will give you Source-File 15, or if you already have this Source-File, it will upgrade
+its level up to a maximum of 3.
+
+This Source-File grants the following benefits:
+
+- Level 1: Permanently start with the TOR router and DarkscapeNavigator.exe, and unlock the full dark web on all Bitnodes.
+- Level 2: Your charisma level increases job salary and rep gain. Also increases authentication speed by 20%
+- Level 3: Your charisma level increases faction work rep gain. Also increases the xp and money gained from .cache files by 50%.