Enemy Infestation cheat codes:
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).