How do you get all 5 cabinets in timesplitters 2

The first two are in the buildings at the bottom of the dam near the start of the level. Climb the stairs to the upper level and drop through a hole in one of the buildings, then grab the timed mine. Open the first two cabinets (they're in two of the buildings) and toss a mine on them. Just make sure you leave the building immediately! The other three are inside the other large building on the other side of the dam. Go through the dam and out the other side to find it. Go inside the building and down the first stairs. There should be a room to your right (across from the shower) with a cabinet to destroy. Go across the next room with the captain and the camera and turn left to find the next two cabinets.