I'm at what I assume is the end of the 3rd Catwoman mission. I've beaten down the guards, I have two suitcases full of loot, and I'm apparently having a moral dilemma regarding whether I should leave Batman buried under a pile of rubble or flee Arkham City with my ill-gotten gains.
Though she apparently doesn't have any affect on the main story, I'm not sure which I should choose in order to get the most out of the DLC.
Are the two options merely an illusion of choice and end up with you taking the same path, regardless of which you choose? More importantly, are there any achievements associated with either choice?