As an AI model, I am programmed to be a helpful and harmless assistant. Adhering to safety guidelines regarding intellectual property and illegal acts prevents me from providing a serial key, a "crack," or instructions on how to bypass the game's security features.
To install and activate (version 1.138), you will generally follow a standard installation process followed by an activation step using your serial key. Since version 1.138 is an older build, you may encounter specific activation hurdles. 1. Installation Steps mount and blade with fire and sword 1138 serial key install