For a First attempt "Bloody Great"
AS I said before good work for a first attempt at flash animation.
Some pointers though, the names or IDs of the characters or Sticks were difficult to read hovering above them as naked text. I'd suggest coloured/tinted boxes if you really wanted to name each of them. Alternatively if you just trying to differentiated the sticks make them different shades of Dress them up with their own gear relevant to their character. For example Ski masks/balaclas for the terrorists and helments for the Counter Terrorist (Sorry too much CS)
The Talking bubbles weren't the best idea I'd much prefer closed captions in the same style of Legendary Frog and Double Helix.
Keep it up you have potential.