p.s Really doesn't come into it's own until you get the rats LOL
I haven't even used most of the powers tbh. Not used the stop time one, windblast, rat swarm or shadow kill.
I just did the Party mission and thought I did it without killing or setting of alarms, then I remembered a weeper that I killed ....so close. The tallboys are tricky!
This is by far GOTY for me. Don't think I have long left now though, just done the Lady Boyle mission and I have played 14 hours according to Steam.