-The medic is the second fastest class, only slower than the scout.

-Poisoning snipers is cheap and evil; dont do it. Or, don't do it regularly.

-Throw a conc grenade under an HW guarding the flag for a great way to get minimal damage and cap the flag.

-The medic is great for checking for spies. Just go up to someone with the medpack and if they bleed they are evil, if they heal then they are good. You kill two birds with one stone this way.

-Throw a conc grenade then run over it. A little before it goes off jump and it will propel you at high speed across the map or up the elevator in 2fort. Great thing to do.

-Your "secondary fire" is switching to the medpack. If youre being blasted at close range by an HW guy remember this: right click and poison the bastard before you die!