Did you ever try to sneak up on a fly?
Months after your loss, that date will probably sneak up on you, and even though you may think you are over your miscarriage grief, this will be a hard day.
The idea he'd never solve this mystery infuriated him, but not as much as the idea she was able to sneak up on him at will.
Or you can sneak up behind unsuspecting mercenary types and knife them in the spine, if you're a particularly malicious individual.
With only a flashlight for light during the majority of the game, bad guys can sneak up and start attacking you at any time.