Weird noise coming fron the engine

I would start with checking if the air filter box is clogged in any way. This would cause a restriction of airflow causing the engine to not accelerate properly and could also cause the shaking because the vehicle is not receiving a proper fuel to air ratio. I have no other info for this car since we don't have it here in the USA but for the brakes, the brake booster might be getting its vacuum from the intake tube and if it's restricted, the brake booster may not work properly and cause a stiff brake pedal. The brake booster is used to help the driver depress the brake pedal.