To enter the in-game cheat mode at any time, type any code as you
play  (it  won_t  work  if  the game is paused). Then hit Enter. If it
doesn_t  seem  to  work,  try them again. Type them carefully when you
have colonists selected: Pressing certain letters can cause a selected
colonist  to  initiate a behavior trait (for example, pressing F gives
the Flee command).

Heal your guys:
     gsaheal - Heals all colonists (not terminated) back to full health.

Look into all rooms:
     gsaroof - Removes all roofs (takes awhile) so you can see into rooms.

Kill the aliens:
     gsaswap  -  Swaps  sides  (allows  you  to  control  aliens); use
following the kill cheat to eliminate selected aliens.
     gsakill - Kills selected characters (your own, or swaps, selects,
and kills aliens).
     gsastop  -  Stops  both aliens and colonists from acting, causing
them to just stand around; type it again to toggle it off.

More Weapons:
     gsabog - Creates a BOG weapon at the cursor that when you pick it
up gives you extra defense and lets you lock doors.
     gsaknife  -  Creates  a  KNIFE weapon at the cursor that when you
pick  it  up makes you invisible to aliens (they won't go for you when
they would normally see you).

More guys:
gsacmdr - Creates a commander at the cursor.
gsamedi - Creates a medical officer at the cursor.
gsaboff - Creates a technician (boffin) at the cursor.

Win and move on:
     gsawin  -  Wins  the level no matter what (so you can continue to
the next).