Chapter 3 of Challenge Mission London is now live in game. Entitled "Family Jewels" this is the final episode with the best reward for completing it (Nightowl Helicopter - 107 attack, 55 defense).
Job Mastery & Passport Cost:
Break Into The Tower Of London: 3 (for green Heat Meter), 4 (yellow), 5 (red) passports and 9% mastery per attempt
Knock Out A Beefeater: 4/5/6 passports and 8% mastery per attempt
Swap In A Replica Of The Diamond: 5/6/7 passports and 5% mastery per attempt
Smuggle The Real Diamond To Mumbai: 6/7/8 passports and 4% mastery per attempt
The jobs in this episode are exactly like previous episodes in the way the Job heat meter works and the mastery %s for completing each job.
The only difference with Chapter 3 of Challenge Mission London is that each job requires more passports. You will need 95 more British Passports than you did in Chapter 2 to complete this new chapter.
You will start out with 100 passports for adding 2 people to your mafia and you can collect 50 passports now every 24 hours. It still should not be too hard if you are collecting the passports regularly.