If Kasumi obtained Chief Roe’s voice sample, Shepard can convince the guard outside the doors that they have permission to enter, allowing Kasumi to impersonate Chief Roe to grant Shepard access. There are two ways into Hock’s private quarters. During the conversation, if Shepard has enough morality points, they can convince Hock to give a speech, which Kasumi samples, but if not, they have to keep him talking. They need to cut the power to the kinetic barrier, find the password and obtain both a voice and DNA sample from Donovan Hock to get inside, so head back up to the party and speak to Hock. Head back inside and take the staircase down to Hock’s vault so Kasumi can determine how to hack it.
Since Hock cannot yet be spoken to, proceed through the party and out onto the terrace, where there is a datapad noting a Chief Roe on duty.
While moving through the party, guests can be overheard commenting on various squadmate loyalty missions that have already been completed and some even comment on whether or not Shepard is actually alive or dead. She enters anyway, cloaking herself so she can keep in contact with Shepard as they search for Hock’s vault and try to figure out how to crack it. Arriving at the party, Shepard is allowed inside, but Kasumi is denied.
