Looks like you will be able to take care of the enemy turrets as well as they were able to take care of you in Portal 1. Now you have the ability, with the Pneumatic Diversity Vents and the Thermal Discouragement Beams seen below to annihilate these turrets in many different ways. Plus they look to be a very interesting puzzle tool, with the pneumatic vents being able to destroy the environment. It is amazing that Valve has developed all the various additions to Portal, which was already amazing and have now made it even better. Though this means that it may also be more difficult.