I've updated my site with a viewer for Chaos Engine:

You can download it here: http://bringerp.free.fr/RE/ (you'll need the image of Chaos Engine CD32, available at my site too).
Even if it's based on the amiga CD32 version, the puzzles stay unchanged and may still interest you.
The viewer allows you to simulate heroes' actions: left click activates triggers (light blue) and scripts (light green), right click simulates missiles (red).
You can browse and export sprites too.
I have no time to write a user guide right now but i'll answer to your questions.
You can find the original thread at the EAB forum (amiga dedicated forum http://eab.abime.net/showthread.php?t=41715)
Have fun,
Kroah