Everyone but Sammy and Mystech roll Willpower. Clem, O’Connor and Torley additionally roll an Initiative test to resolve Surprise, no bonus. You can then roll initiative as normal but it may be impacted by the Howl, those three are the only ones with a chance to respond to the attackers this round.
Mystech is too far gone to be of any use and Sammy will not be involved at the moment, on the bright side, they can’t be affected by the Howl either.