the intruder mines

you end up on a elevator going down to a mineshaft do you hear a phone and it tells you that a box is down there that needs to reach 100% the phone also tells you to keep the generators alive and the intruder is down there and he will try to destroy the generators that you fix if you see him run hide in lockers fix generators so the box can get up to 100 faster if all the generators are destroyed then the box won't charge the intruder can't talk