Nice thing to have a visual setup at the start of the game, gives out quality feel. Although there's quite some text in menus, pretty hard to read when just starting out.
When starting game got a nice tingle when saw that stuff can be unlocked. I guess I'm a sucker for progression.
Got stuck after killing first guard, the sneak-grab combo was hard to grasp, so I just bruteforced it through. Stuck:
The second picture shows attempts to murder the guard, but I wasn't able to do. The thing coming out of guard while holding mouse button didn't make much sense. Also, by holding the guard and facing wall with him, I could glitch him out of the room. That's probably what happened in play of my first screenshot.