question on 03 Legacy

My fiance replaced head gaskets on my 03 Subaru Legacy. He said the head wasn't warped so that didn't need to be shaved down. He put it back together and driving it home it has no brakes, even though he just replaced my front brakes 2 weeks ago.

Also the heat will not come on. He didn't replace the water pump because he thought it looked OK and had been replaced sometime in the car's life. Any ideas?