A rarer feature in the V1.4.1 E trainer is the ability to freeze the enemy AI's economy. The AI lords will still build, but they will run out of gold or stop producing troops. This turns the "Extreme Trail" into a casual stroll.
Ordinarily, building a knight or a catapult takes time. This feature removes the production timer. Click "Create" in your barracks, and the unit appears instantly on the rally point. This allows for "zerg-rush" tactics impossible in vanilla Extreme.
The purist’s view: Beating the game with a trainer removes the "soul" of Stronghold, which is surviving the early game scramble. The pragmatist’s view: You paid for the game. You have 3 hours to play on a Sunday. Use the trainer and have fun.