Quoting: Anticheese
http://www.notthesneeze.com/art/loose_art/trombone2.wav
Because a trombone is worth a thousand words.
That missed the last note...
Quoting: sn0rb
I used Coward tactics the whole time, only going Aggressive when under the influence of Berserk Packs/Chainsaw.
If you teach yourself to switch tactics more often (going aggressive when you shoot, back to coward to reload or walk), you'll finish the game next time :)