Cheat:
     Run  the  program as normal but instead of hitting [Enter] on the
graphics  selection  screen  highlight  your choice and then hit [F7].
When the action starts press [I] and nothing can kill you.

Programming:
     For  free money edit the file XENON2.EXE and change the following
bytes:
F4 01 F4 01 F4 01 58 02 EB 03
to:
00 00 00 00 00 00 00 00 00 00