I never understood the gameplay estimates, DA:O was estimated to be at about 40+ hours gameplay, I finished it completely with all the side quests in 17, ME2 was estimated to be great amount too, I did it in about 21 on normal and 24 on insane(After alot of practice). I don't rush it either, I take my time with games, unless they're FPS.
Disconnect and self destruct, one bullet a time.