I chose to do every element of the investigative paper-chase in the game - which had me scouring Ubisoft's virtual New York for 'clues' - but this game of 'hide and seek' is optional. My BIG clan friends chose to skip this, only completing a proportion of the story-driven tasks as a bi-product of completing the main and sub missions. I am, however, a bit anal about such things!
|My player character as he was when I completed the story mode of the game.|
Anyway, by the time you reach level 30 you should be a fairly adept user of the game's mechanics and ready to face other players directly in the gladiatorial area of The Dark Zone. The flaw in this is that this zone is inhabited by some very (very) high-level players (who have no lives) and you will have your butt handed to you when you encounter them...A bit of a flaw i Ubisoft's plan!
Role on the DLC is what I (and many others) are saying.