Rikimaru, the bête noire of John Doe.

Please add a "pros/cons" section.It's really good to let people know the weaknesses and strengths of Riki.I don't really agree with your skill build,you should max out blink strike to catch-up with enemies that are running away(leveling blinkstrike decreases the cooldown tremendously).You should know how Smoke Screen can be put to use for escaping and initiating.The slow and miss chance is great for escaping while the silence is great for disabling your enemies to ruin deadly combos such as the meat hoook, Rot and Dismember combo for pudge to save your teammates.Although upgrading stats isn't bad because of your backstab,it's still better to upgrade your skills.

This guide's been formatted and broken up really well into paragraphs so I found it a breeze to read and by definition it isn't a wall of text.
+1 good job!

I agree with the items but wow, that is one big wall of text. adding some color and picks would make it a lot easer to read