I have spent a total of 44 hours on the multiplayer and am only 7 levels away from Prime. So I expect I'll probably be able to come in under 50 hrs. How long has it taken everyone else? I am no great gamer by any means but I didn't expect it to take this long. Maybe it is because this is the first game I have really committed to on the multiplayer. I have also been taking advantage of the double XP as much as possible.