I was mostly fine with the whole "you can only collect 100 gold daily" rule when all you could buy was cosmetics. Now that you've added what appears to be Zerk's special ability for the price of 6000 gold, I believe this limit is outrageous. There is no way in hell someone will play a game as simple as this for 60 straight days just to unlock a spin attack. Honestly, I think the price would be reasonable if you could collect as much gold as you want. This is quite clearly a money grab, and I'm surprised you don't make enough money through ads to keep you from pulling a desperate move like this. Whatever you're making me pay for this move, no matter how much more powerful it makes me, it's not worth it.
That being said, I'm exited that you're adding unique abilities to different weapons. Add one to the hammer, add some other weapons, like a glaive or halberd, or maybe a hook-like weapon, and give those special abilities, too. Make the prices bearable, 4000-8000 is fine AS LONG AS YOU GET RID OF THE DAMN DAILY LIMIT. This is a large area of potential for your developing game.
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