Here are two recordings of me completing Icon of Sin on Ultra 
Violence.  The first recording (ICON1) didn't give me too many 
problems and is a fairly good example of the strategy I use to beat 
this level (only made one or two small errors).

The second one (ICON2) is a little more exciting, mainly because I 
had to go up the elevator FIVE times before I got in enough direct 
hits.

It *IS* possible afterall!  Happy Dooming.

If you aren't familiar with the command lines, copying all of these 
files to your Doom directory and typing "icon1" or "icon2" will play 
that movie.

 - Chris Muller