This, Guay said, is an ability that the player will develop throughout the course of the game. You won't start off being able to cause the kind of chaos that was shown (Ubisoft was demoing "a late game moment") so we can expect some skill unlocks and tech upgrades as the game progresses. The game is most definitely an open-world action adventure, but Ubisoft is emphasising multiple ways of tackling missions. It does really sound like a mix of Grand Theft Auto and Deus Ex. Guay used the art exhibit mission (shown in the reveal clip) as an example of the various approaches to missions. In the clip that was shown, Pierce hacked the bouncer's phone, killing the signal. Thinking his reception was playing up, the bouncer moved away from his post to try to get better reception in the open street. This allowed Pierce to slip in the front door. Guay said that another player might have decided to utilise stealth rather than sabotage, and sneak in through a back door.