This boss fight is a required part of each mastery level for the Secret District By The Bookie. You must also complete the silver mastery level of the By The Bookie secret district before you are allowed to move on the the silver mastery level of the boss fight.
This boss fight follows the same style as a Boss Fight Event, except with the addition of stamina attacks. Stamina requirements per attack increase at a rate of 5 each time (5 for the first attack, 10 for the second, and so on). The damage done per attack stays the same regardless of the amount of stamina required. As the cost per attack increases so does the amount of experience gained (unlike family boss fights), with a stamina to experience ratio falling randomly between 2.0 and 2.5. Boss Fight Event consumables are used as well as the secret district consumable as the special item. Consumable use does not give experience.
Spent 2k in energy only because I was going to lose it, did the last combo, less than 20 times. kind of a let down, expected it to be a little more difficult
You can beat the boss before finishing all the jobs. I spent 30 RP on unlocking the red combo bonus on the Bronze tier and 3 RP on the red combo on the silver tier. For both boss fights Bronze and silver tier I used only 9 of the fists, 9 of the knives and 18 calculators.