I think this plan is kinda good for a bunch of random bad guys who'll probably be dead pretty soon: bait the strongest adventurer to solo a boss and steal the drop (the drop will be very good, since Akihito managed to kill the boss on the 1st floor and got a fire weapon, fire shield and fire protective gear) and the blonde girl will be too weak to fight back or even dead.
If things go wrong, their identities are hidden (unless gambler girl managed to see their faces and she still has to prove its their fault) and they can run away since they're not the target of the Orcs anymore.