So I spent some time going back and getting 200 coins on the first level in order to play the arcade mini-game, but then I mistakenly first pressed 'START' before placing any of the arrows (I thought I'd have to press 'start' to agree to spend my coins and get access to the game). So the character just walked over to the right and then I was out of coins. This was the point where I gave up on the game.