Guild Wars 2

I enjoyed the idea of the clock tower, but there where just to many little things that made it impossible to do. As a Asura I had the problem that even if I was in a group of only humans (Never) my character was completely hidden from view 75% of the time.
My other problem was having to wait for up to 40 seconds to retry the puzzle. I feel that I could have complicated it after a reasonable number of attempts if I was allowed to go solo.

If giving each player their own instance of the clocktower would be un doable do to server constrictions than the problem still could have easily been fixed by make only a players own character visible to them while climbing the tower. heck if you still wanted to make it feel like a race maybe only 4-5 same race characters could also be made visible to each character.

TL;DR: Difficulty was acceptable but overall made impossible by the other players (especially for Asura). Next time let us go solo make the other players invisible to us.