At the tactics screen, hold Ctrl and type "iguana" to enable cheat mode. Then, enter one of the following codes:
Show all units and objects: Alt + E
Ammo refill: Alt + R
Item scrolling:Alt + W
Teleport selected Merc to pointer location: Alt + T
Kill all enemies in current sector: Alt + O
Refresh action points of the select Merc: Alt + D
Spawn enemy at pointer location: Alt + B
Spawn Civilist at pointer location: Alt + C
Spawn new Merc at pointer location: Alt + G
Spawn Roboter at pointer location: Alt + Y
Spawn enemy bug at pointer location: Ctrl + O