Never fear! With Mind Control and a Teleporter, you can bring the guy in the laser room to your ship. Then get him to stand in the teleport room. One way to do this would be to let him damage it, and when you mind control him again he'll try to repair it. Now teleport him back to the flagship's main cabin! Now you have a guy who will go around repairing systems in the main cabin that you can go damage again!
I just figured this out today using Slug A. Forgot to bring any hull damaging weapons and already killed all the crew except the laser guy. Thought I was gonna lose for sure until I thought of this trick. Just goes to show how overpowered Mind Control + Teleporter is for the final battle
