To be rich (spoiler)
A short note for someone who believe that gold is hard to get. Just play normally till you meet a boss; rat with sunglasses. He will release red running bombs, which worth 200 gold each, simply destroy the bombs before they reach the daddy dragon, you will then get rich in no time. If you want that 100,000 gold for the ultimate claw, you can try it with some diligent. You can also by the body armor just in case if the bomb might accidentally running to the dragon behind (to save him from damage), also stock some medikit just in case. Make sure NOT to buy Fireballz as the big dragon will occasionally fire in on the bomb, make it bouce to hit the boss till his death. In case if the rat boss is dead, don't worry, he will appear again in other stages.
The game is nice but as so many people said, there are a lot of bugs.
Well, you used to created an epic game before, so folks suspect something greater. Cheer up!