Very nice game!
I don't know how much time did you gys spend on this game - but everything is awesome - especially graphic and animation also the Contra ending makes me happy ^_^
Medals are really easy - at first i only got 3 of them - then i died and started again - open one new medal - in escaping from the cave i got down and got an alternative ending ^_^.
At least - i should to get other 4 medals - the trick helped me :
(When you download game and press on a "cross" in the right up corner in the flash options - click "play" and "press a" before AD doesn't appear - WOW - the frames of the game skipping - and i've got a 200 seconds medal without my physical force)
After that i finally escaped from the cave by my own hands and got a new medal.
Then in comments I found a secret medal and open the last - I've got a Golden Sword!!!
Exellent game, but very easy...
Keep it up guys - i really love this style of Cave of Wonders and your previous games ^_^