An excellent Guide, and covers the really important parts of the ice primariy and gives insight into using the secondary depending upon your flavor.
A suggestion, you seem to use the word "mob" to mean a single villian. "Mob" is by definition, a group. I'd edit your post to state villian (or minion or bad-guy) and use mob for when you state "groups of mob" (which would really be a group of groups).
Otw, a fine, fine guide.