Serge takes a deep breath, ducking the turret's attack with the aid of [Prescience]- and makes a break for it. He's probably attracting all sorts of unwanted attention as he barges towards the switch, but that's okay, probably.

Even if he takes a massive amount of hurt from this stunt, that's alright, because he can mitigate that. He's charging for the control panel as fast as he can, zigzagging across the floor and slapping his fist on the big button! There's a big button, right? There's always a big button. If there isn't a big button, that would mean Serge has just done something extremely stupid for no reason.