Great game but need a couple pointers..

[mbv]

I find using the V key a very frustrating experience as you have to have the timing just right or you will be noticed. You need to approach really quick then when up close press the V key. You move extremely slowly with the V key so you have to be very close and quick with the chloroform/stun. I tend to whack 'em with stun as it is quicker than chloroform and gives less chance of being noticed if there is more than one enemy in the room/area.