Enable Paladins: 
At the Detatchment screen, hold down CTRL and type in Paladin to enable knight paladin
units. 

During battle, hold down CTRL and type: 

EYEOFTERROR     - show all enemy units
HERETIC         - complete mission
CLEANSINGFIRE   - hit probabillity increased to 100%
WHITEDWARF      - all units invulnerable to ranged weapon fire