Still playing Mass Effect 1. I'm much more paragon than renegade now, since I got some big boosts from a couple missions. Really enjoyable game, took longer than most games for me to get really good at it though.
The mechanics do take a little while to get used to and be able to take advantage of, and especially for the power-centric classes like Adept, Engineer and Sentinel, as it takes a while before you can actually apply your specialisation properly due to the long cooldowns. Comes with the territory of being an old-style RPG really.
Then again, Pistol + Marksman = Sorted.