Medieval: Total War - Viking Invasion Cheats

Start the game with the "[drive and folder path]medieval_tw.exe" -ian command. Then, press one of the following keys during the game to activate the corresponding function:
Result
Key
CPU control of game A
God mode; see all regions and units G
AI I
AI H
Tour mode S
Tour mode [F5]
Display panels [Ctrl] + I

Enter the following codes at the campaign map:
.badgerbunny. - Unlock all units and buildings
.conan. - Play as the rebels
.deadringer. - Get one million Florins
.matteosartori. - Reveal full map
.mefoundsomecu. - Get copper
.mefoundsomeag. - Get silver
.mefoundsomeau. - Get gold
.viagra. - Get iron
.worksundays. - Get fast construction

Get Joan of Arc, play as the French, win a lot of territories,
and frequently check you generals chart (the sword on the territories
map). She will be ranked 7 and her Command, Piety, and Loyalty
will be maxed out.
Trainer
Trainer: +3 v2.01 by Deviance

Enter the following codes at the campaign map:

.deadringer. - Get one million Florins
.viagra. - Get iron
.mefoundsomecu. - Get copper
.mefoundsomeag. - Get silver
.mefoundsomeau. - Get gold
.badgerbunny. - Unlock all units and buildings
.worksundays. - Get fast construction
.matteosartori. - Reveal full map
.conan. - Play as the rebels