A Rude Awakening: Hangover (part 1)
Looking over the wreck you realise that there's obviously no way that generator is still running and so the ship is running on batteries. The batteries are dispersed around the ship and so wouldn't be easy for you to manipulate the power supply in any way, it's just not a functionality the ship has. Of course you might be able to write your own program to do so but you have serious time constraints armed with automatic weapons.
Your eyes settle on the wreckage of the launch, it's dark bulk outlined against the hard stars. It's impossible to tell if it came from the Brunel without closer inspection. As you're looking at it you see the smashed remnants of three consoles nearby, impacted by the wreck and the kinetic trauma the ship has taken. They are dark and twisted but serious work might get one working again, it would be difficult as they're in zero gee and pieces of metal and plastic are drifting about.
You cold probably get out onto the hull through the jagged rents of the shifting structure from here. Difficult and dangerous but not impossible.
The decking shifts, if you had atmosphere you'd have heard groans of the structure. This ship is breaking up.
Maybe not all at once but sooner or later she'll be tumbling sections of debris in deep space, lifeless and dark with a cargo of the dead.