Saving does not work, You never get coins to buy anything in the shop, and the translation is terrible. Other than that, this game could have some potential.
Looking at the HTML for the page, the game's URL shows "http://chat.kongregate.com/gamez/0013/3757/live/.SWF?kongregate_game_version=1325219398"
A blank filename?
If your character would actually jump when you pressed the jump button, falling off of ledges is seriously frustrating enough to give up on this badge.
Clicking on cards doesn't do anything for me. I got stuck in the tutorial when it asked me to click the first attack card and it didn't do anything. I refreshed the browser and it skipped the tutorial, but when I begin a match I am still unable to play cards. I can click the "drop" button and they get discarded, but I cannot play them.
Upgrades are linked to the medals. Most take effect on the next game.