Bulldog Stadium mod for Quake

Bulldog Stadium is a modification of Id Software's Quake game.
It's a first person shooter, without the shooting.
The mod is set in a number of stadiums, each populated by a different type of monster. The innards of each stadium differ to
reflect the inhabitants.
The mod then follows a similar structure to the children's game of "British Bulldog", players have to make their way from
one end of the stadium to the other, avoiding death, and attempting to get to the finish before the time limit is up.
A score is given for each level; this is worked out by mutliplying the time the player has left by their remaining health.
As you work through the levels, the scores for each one are totalled up, giving the overall score.
If the player gets through a level without losing any health, a 50 point bonus is awarded. Any health lost in one level is replaced
for the next, so the player begins each one at maximum health.
There is a speed-up power up in each level, and a couple require a key to be found.
Obviously tactics play a part in getting good scores; deciding whether to take a longer route to avoid damage from monsters,
or coping with damage to get a faster time.
There are 6 levels/stadiums in the game:
Castle Stadium; populated by knights (start)
Jurassic Stadium; populated by raptors (e1m1)
Sewer Stadium; populated by fish (e1m2)
Church Stadium; populated by zombies (e1m3)
Snow Stadium; populated by shamblers (e1m4)
Lava Stadium; populated by fiends. (e1m5)
There may be another one ...