Ok, I have been replaying Mass Effect 1 before I buy Mass Effect 2 because I originally beat the game in a 3 day span when it first came out. Naturally, I had forgotten a lot of the details and I had forgotten almost all of the choices I made. I decided the best course of action, from a storyline perspective, was to just restart completely from level 1. I did so and enjoyed my second character as much as the first. Once I finished that, I decided I was going to playthrough a second time with my old character from the first time I played. Now, all I pretty much remembered was that my old character was a Renegade, so I decided to go paragon with the second character. My real question here is, do the choices I make in my second playthrough with my original character change the outcome of anything in Mass Effect 2? Or are all the choices I made the first time I played through the ones that will be locked in and transfered over to Mass Effect 2?