After dying, I collided with, well, everything. Movement became difficult to the point where I just had to quit. For your future project I suggest looking into a freeware library for AS3 which might be able to handle some of the collision detection things for you. Game looked nice in a Commodore 64 kinda way, although the 2nd level was an eyesore. All in all, consider this project a success in how it's probably taught you. Start/keep working on your new project!
It's a nice proof of concept and doesn't look bad. Try and draw tiles that don't 'repeat' so much. Goes without saying and I'm probably sure you're planning on it, but the combat needs a bit more to it. You can do that however you want I guess (classes, different weapons, magic, whatever). Keep at it, but spend more time working on the game itself than sharing the unfinished product with us!
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 "RPG"){kind=icon}