Good Tut.
Useful tuturial I could understand. Good choice of different subjects, each well done.
Best score I have so far given to a tut. Also best score I've ever given to a soundless Flash.
Sound would help to bring it to life, even something simple.
Spelling etc is important in tutorials as you give confidence in your authority, as well as making it easier to understand, so here's a few I found, get someone to go through it for you, we cannot see our own mistakes because we know what we meant to say-
-weight shifts forward on right left?!
-covering fire
-distract
-requires
Blood is a good subject- nearly all blood on NG is crap .
I suggest you change the last paragraph to simplify it-
"...on the floor, which should make it more realistic."