Sewer (msewer.map)
Author:  Martin Brentnall
Type:    BloodBath (2-4, Trap Arena)
Details: A large arched sewer room containing various objects and traps.
         Open a hole in the floor and watch your victim helplessly fall into
         the black subway tunnel below, to be killed by an oncoming train!
Secrets: A door inside the small booth has a sign reading "Under
         Construction".  This is the entrance to the secret.  The switch to
         open the door is at the opposite side of the sewer, on a wall behind
         the crate and it is very faint.  It will open the door after a fixed
         time of about 20 seconds.  The door will only open very briefly.
         Once inside, an elevator will take you down and another door will
         let you out.  You MUST exit, otherwise you'll remain trapped in the
         elevator.
         Run around the small passage leading back into the elevator shaft.
         The elevator will go back up, allowing you to get underneath it.
         Fall down the shaft into an empty room below.  Open the door and
         enter the next room.
         This room is distinct, it has reflective floors, stained glass
         windows, one large door and nine small doors.  The large door will
         not open directly and all of the small doors lead to certain death.
         In order to open the large door, open the second small door from the
         left, but don't walk in.  Instead, activate the blackness and the
         large door will open.
         A passage leads into a lava-filled room that has platforms both on
         the ground and on the ceiling, up-side-down.  Simply proceed through
         this room to reach a room filled with power-ups, with candles on
         either side.  You can exit the secret area by proceeding forward,
         but there is more to it than this.  In the room with the candles,
         there are two areas of the wall that can be opened, one on the left
         and one on the right.  The left one is a red herring; activating the
         switch in this room will kill you.
         Instead, proceed through the right room to find a number of
         power-ups.  In this room, look up to see a mirror on the wall.
         Shoot this mirror and the room will "Flip" up-side-down.  A door will
         lead out into the room you were in earlier with the reflective
         floor, only now you're walking on the ceiling.  Proceed through the
         large door as before, and jump across the platforms you saw earlier
         on the ceiling, to reach the door.  The door is actually a lift, and
         will take you up to a room looking out on the main sewer, where you
         can activate two extra traps.  Exit through the hole as before.
Other:   The reflection effect is something I've never seen in blood.  It
         is achieved by creating a duplicate up-side-down version of the room
         and placing it underneath the real one using an upper / lower stack.
         The floor of the room is constructed out of transparent floor
         sprites.
         When you are "upside down", you are actually inside the lower stack
         of the room (if more players are in the secret, you'll be able to
         see them in the reflection above / below).  The up-side-down lava
         room is actually a complete duplicate of the first one.  Don't
         expect to see players walking on the ceiling!