Yep, you can find the datashard in the club's office, and blackmail him to avoid his fight. Also just use the correct maneuvers to evade the attacks of the mistress - if you defeat her, the guy would be easy to deal with after. Max upgrades before the club is seven, 2 in the junkyard, others in the pleasure district. Also we tested the game without upgrades - you can beat it, but it is not easy.