Haven't tried multiplayer yet, and probably won't bother.
I got my arse into gear when I saw you'd got the achievement for 120 rainbows. I was on close, so got the achievement about 40 minutes after you.
Haven't played Lego Marvel in about a week, but am looking forward to getting back to it. Could be my favourite Lego game - it's spot on. Have finished the story, and am working my way through gold bricks and extra characters on the map. I'd say I'm less than 50% of the way through the game - but it's still fun, whereas LOTR was a chore by this point.
Need to get back to COD at some point, too. It's decent, but not the best COD they've done.
Really should try to get through some of the xb360 backlog at some point, too.
Will be out pretty much all day Christmas Day, and half of Boxing Day, but aside from that I anticipate spending most of the next week playing games.