User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24760042-20140702114028/@comment-2142534-20140702222303

What I'm saying is that "Don't get any damage" would be a frustrating constraint in previous ACs, but in ACU, with stealth being more prominent, this could be easier. I expect most memories in ACU to be "either be a lot stealthy and get very little damage, or get killed". In the demo, every player fought a single guard only, all other guards were assassinated. If all players were good enough fighters, they could defeat the guards with no damage taken.