Easy battles:
Run the game with the following command line parameter:

wc3 -mitchell

If you entered the code correctly, a voice will yell "Mitchell" when Blair
is preparing to launch.

Now you can use the following key combinations:
Destroy the targeted ship - Press CTRL + W during the battle
Destroy all enemy ships on radar - Press CTRL + ALT + W during the battle


Watching movies:
Press CAPS LOCK, then hold SHIFT + DELETE + F10 and type "lordbritish"
during the opening credits. This will unlock a new menu, where you can
watch any of the FMV sequences from the game. Press ALT + O during flight
mode to bring up the special menu.

FMV sequence fast forward:
During a FMV sequence, press CTRL + ALT + S.

Forced crash:
During a mission, press ALT + Y.

Show debug info:
While playing a game, press ALT + D.


Cheat menu:
Press ALT + O during a mission.
This will unlock the following options:
Invincibility
No collision detection,
Skill level
Detail level
Video mode
Audio mode