User blog comment:Master Sima Yi/Assassinews 03-12-'14 — New Assassin's Creed in Victorian London leaked/@comment-24849873-20141204031826/@comment-13471981-20141204165213

Running through a window is alright, just approach it from the right angle and press Freerun + Down. If you want to get through a window while climbing, it tends to get difficult, and the L2 button doesn't always help.