The Big Fucking Attack happened when a group of characters decided to try and infiltrate Clover's home in Central Park, hoping to initiate an attack against her. This group was led by Axel and Loz, with the help of Sora, Kairi, Dilandu, and Rhode. Essentially, it was not only an abysmal failure, but the attack only proved to anger Cloverfield and caused her to lead a rampage across the city, destroying a large portion of the buildings and injuring dozens.

The damage (taken from the mod journal, because I'm lazy)

"The monster's resulting rampage lasted several hours. Big Mommy headed south from Central Park along Broadway and systematically made her way through East and Greenwich Villages, leaving carnage and destruction in her wake. Most residences in her path have been completely destroyed, including Hotel Pennsylvania, Keyblader's Court, the Strand apartments, the Rai Rai Ken and apartments, the Jane Heights apartments, and more. The Villages took the brunt of the attack, seeing apartments, supply centers, internet cafes, stores, bars, etc leveled. If your characters live in East and Greenwich Villages, you can assume their homes were destroyed or badly damaged."

Thirty-one characters were injured - some finding themselves in extremely bad condition.

The after-effects left many people in shock and surprised by the occurence, even though they could hear Big Mommy coming. Others pulled themselves together quickly and made base at Madison Square Garden, where still people are staying to this day.