From the patch notes:
MISSIONS
New feature: Post Mission Activity Summary
After completing missions, players may opt to look at an activity summary showcasing their performance in that activity and allowing an expanded look at a variety of detailed statistics.
Bank Headquarters
Reduced difficulty for solo players.
Roosevelt Island
Reduced difficulty for solo players.
I really don't think this was implemented. I had to run challenging Roosevelt solo and it was not easy... 3 of the elite sledgehammer guys took way too many clips to take down... not to mention flame throwers with unlimited range and LMG guys shredding me...
I experienced the same thing on Bank Headquarters yesterday...
Please check and validate this was implemented.