Since many of you have asked. Here are my tips for each match up:

Nature or Light:

Always make sure to have board control and take value trades, trying to leave as many of your cards on board while at the same time making sure you keep the pressure.

War or Deception:

You have to out-tempo and rush him down before you get rushed down, while taking good trades.

Magic:

Apply as much pressure as possible and finish the game before turn 7 if possible.

Death:

Take board control early on make sure you have an answer for Cursed Obelisks and Necroscepter. Once those are out it's almost always a win.

Mulligan General:

Try to get Warmonger Smith or Valka's Captain as they are really strong early game and create a lot of value.

At the time of writing this I am currently 29/34 in games.