One engine out on a turbo prop (any type prop) aircraft with engines that far apart makes the aircraft hard to control. You have to keep up a minimum amout of airspeed (VMC) to have enough rudder control to counteract the push from the opposite engine. The small size rudder doesn’t help either. In other words, if engine is out on one side and you get slow, then add lots of power to the good engine the aircraft wants to flip over the top. If you get too slow that’s exactly what will happen. If there is not enough airspeed for the rudder to counteract the force of the prop trying to turn the aircraft over then the ONLY choice you have is to reduce power on the good engine and lower the nose to pick up speed. If the ground is too close then the best you can hope for is to land with the wings level. It takes a lot of training to handle these situations correctly.
Good explanation