Bob wants strategy then so have it. I will talk about the spy and share what I know and hopefully get some stuff from others who are better at me then spy.
So far and I can tell you all about some cool things I picked up on, besides the well known jump and side steep stab. if u bind a key to destroy 4 as a spy you can kill your own sapper, now that sounds dumb right but so far it has helped a bit. When I disguise as an engie and sap a sentry or whatever it is basically calling the engie back, so if u destroy it, he will think your on his side allowing for some good stabbing. It is a good way to bug people by spamming there stuff with a bunch of sappers.
That is a idea, I tired and it worked pretty well the guy just left, it was weird I wouldn't but then again I thought of it. I found some success in the using the dispenser as jumping platform in open areas for a nice jump stab as long as they are close to it and you.
Not much more that most people don't already know, so what might you know *cough drake, blade, spycrab dash cough*
