Warhammer- Final Liberation

While in the detachment selection screen
Hold down the control key and type Paladin
This ables you to use Knight Paladin units.
            
During the battle
Hold down the control key and type:
            
EYEOFTERROR        - To be able to see all enemy units.
HERETIC            - Completes the mission.
CLEANSINFIRE       - Your hit probability is increased to 100%.
WHITEDWARF         - Makes all your units invulnerable to ranged weapon 
                     fire, not close combat.
            
P.S Control makes the selected unit fire so try to select a unit 
    that has fired or it cannot fire.