Hall of Pain Hints
~~~~~~~~~~~~~~~~~~

1.	Watch yourself in the octagonal room with the acid lake - level
designers may realise it immediately, though others will work it out
soon enough...

2.	On some of the higher difficulties, ammo occasionally gets low -
remember barrels.

3.	The maze is crawling with troopers/sargents, waiting to ambush
you.   They are deliberately not deaf, but the lines between sectors
(areas of different light here) block sound (2 lines=no sound).   It is
usually best to take it *very* slowly, and clear each part of the maze
before moving on, otherwise you can get really swamped.