Thank you for playing! :)
Yeah getting the fixed cameras can be tricky! Tank controls is a good option but you also have people that totally hate them (sadly).
With the enemies they cant actually see! So got to sneak past them quietly (Hold space) but if you touch them then they will attack and give chase until dead! After the first obligatory chase, when you get near the other enemies we have a pop up telling you to sneak! Just make sure not to get too close!