DOCS: Bladeburner in-game documentation update (#755)

src/Documentation/doc/advanced/bladeburners.md

@@ -1,3 +1,11 @@
 # Bladeburners
 
-PLACEHOLDER
+Bladeburner divisions were created internationally in the mid-21st century. Tasked with monitoring and "managing" rogue Synthoids, which may have blended into society and are sometimes considered a threat, working for Bladeburners gives access to powerful enhancements and a goal of destroying [BitNodes](bitnodes.md) by operating against increasingly strong Synthoid opposition.
+
+## Bladeburner Skills:
+
+Designed to improve a human agent's capabilities beyond their natural limits, Bladeburner skills add a persistent bonus while in the [BitNode](bitnodes.md) where they were purchased. Bladeburner skills are purchased with Bladeburner skill points, not money.
+
+## Faction and Rank:
+
+Bladeburners also offer unique [Augmentations](../basic/augmentations.md) and a [Faction](factions.md) invite to agents who "put in the work" to gain a small amount of rank. While Bladeburner rank and skill points persist after any augmentation installs, faction reputation will be reset. Bladeburner faction reputation can only be gained through Bladeburner actions.