Dude, you're cramming in too much! That list is like startung in Seattle, going to LA, to Houston, to New Orleans, to Washington, to Chicago, to New York or something. Europe isn't THAT small. You won't be able to see much of any location.
Nu tip is to avoid the usual tourist traps, don't go to the Louvre in Paris; you don't wanna stand in line for two hours when you have so little time in each city. Maybe just wander around. Or make a short list of places you wanna visit and see in each location.
I'm on Twitter @DanneSandin!
Furthermore, I think VGChartz should add a "Like"-button.