First Enable your cheats in the game (Pre-Patch)

Enabling cheat codes in Heroes of Might and Magic V requires editing a game file, and therefore it is highly recommended that you create a backup of any file you plan to edit before proceeding.
Using a text editor, such as Notepad , or Wordpad supplied with Windows systems, open the file autoexec.cfg located in the 'profiles' folder within the game directory.
With autoexec.cfg open, add this line to the end of the file:
setvar dev_console_password = schwinge-des-todes
Now, when you play a game, you will be able to open the cheat console by pressing the tilde key. (the tilde key is to the left of the number 1 and looks like this ~.
Using Cheat Codes
Once cheats have been activated, you can bring up the console with ~, type in one of the codes below and press Enter to activate it:
NOTE: This is disabled in later versions.

Contributed by: malakadil, Micosil, GreatSkeeve, Kacpir97 

Cheats and Codes of Heroes of Might and Magic V: Hammers of Fate

To be able to use the traps in the game of Heroes of Might and Magic V: Hammers of Fate You must locate the so called file "autoexec_a1.cfg", You open with Notepad And finds the section that says: "// Startup " Then you write of this form the following information:

setvar dev_console_password = schwinge-des-todes

Example of since it is necessary to to see in the file:

//============================================================================ // Startup mainmenu setvar dev_console_password = schwinge-des-todes

Then you have that hubicar the file called "input_a1.cfg", You open with Notepad And finds the section that says: "// Common section (always active)" In the part that says: "// console" Then you write of this form the following information:

bind show_console '`'

Example of since it is necessary to to see in the file:

// console
bind console_run_cmd 'ENTER'
bind console_run_cmd 'NUM_ENTER'
bind console_next_cmd 'DOWN'
bind console_prev_cmd 'UP'
bind console_next_string 'HOME'
bind console_prev_string 'END'
bind console_first_string 'LCTRL' + 'HOME'
bind console_last_string 'LCTRL' + 'END'
bind show_console '`'

This key '`' is located to the left side of the number 1, down of the key Esc. NOT TO WRITE ANY MORE OF THE SKILL 171

Contributed by: kalhel62