Der Riese/Radio Message

The first radio is in the spawn room near to some barrels.

The secon radio is in the room before the teleporter B a the left side in the middle of downed lockers.

The third radio is in the [mistery box] trench gun room in a hole in the roof.

The four radio is in the room of the teleporter A inside of one of the little chambers.

The fifth radio is in the teleporter C room over shelf in the left side of the room before the staircase.

The sixth radio is in the room that appears to be a little basement where you can buy greaneds is in the corner in the back side.