When in the Egyptian stage, there is a special pattern with the tiles in the room with the Golden Gun. If you follow this pattern correctly the Golden Gun's case will open and the Drone Guns will not emerge.

This is the pattern:

First go through the door and walk to the very last tile in the narrow pathway. Ahead should be a room with many tiles.

Go forward to the first tile and turn left. Then walk over to the wall, turn right and move 2 tiles forward. Now turn right again and go forward another 3 tiles. Now turn left and walk over to the very corner of the drone gun case (which should be about two tiles). Now turn left and move forward by another tile.

Now turn right and move forward by one tile. Now turn left and go one tile forward. Now turn right and go 2 tiles forward. Now turn right again and move forward by one tile.

Now the Golden Gun's case should open and you will be able to grab it. After following this pattern, the drone guns will not emerge unless you return to the room and do the tile pattern incorrectly.

With the Golden Gun, you can easily kill Baron Samedi and anyone who gets in your way.