Hm. Is the crossbow significantly easier to fire than the bow? I think one of the important parts of having such a massive damage and silence advantage of arrows is balancing it with being pretty hard to aim over various distances unless you've practiced. Same question with the alarm disabling. They forced you to get to one of the alarms unseen, which is part of the tactical approach and planning, but other times it's basically impossible to get to the alarm because they set up the design in an actually sensible manner, which forces you to rely on actively influencing distractions.