However, it must be noted that playing with Cheats enabled will stop you from receiving Steam achievements. Use them to mess around or force an epic battle. Note: They are not recommended for serious playing as they will ruin your gameplay experience, making the game in most cases too easy and probably boring. This will give full access to all the cheat menus shown below.
For the full cheat menus, you do as well have to enable in the Advanced Tab the Edit Mode. From there, go to the Game tab and check the box next to Enable Cheats.
