I like the screen transitions and the art style. However, something doesn't feel right to me about the jumping--maybe a double jump and also a smaller jump when you tap the button quickly could improve it. Actually I guess the jumping could be for a sequel because this game feels complete already.
Nice overall. I really like the slowdown time ability. The "Recommended Upgrade" message is a nice touch too.
One thing I'd recommend is maybe a message telling the player that they can't afford the item they clicked on if they don't have enough money. For example in my case I was reading the price of the Dual Missiles as $1 instead of $1000 since it's written as "1.000".
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 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
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