Great game, had a lot of fun with it. Felt like a total badass running around as this guy.
The challenge kind of disappeared once I figured out that the best strategy is to keep running right, all resource management goes out the window there and it becomes a game of run to create, mutilate the crap out of enemies around the crate, run to next crate, rinse repeat. Not only does this method circumvent a gameplay element (that you state in your comment) it is more rewarding in terms of gold to do it as well! I see that it is a hint you give out as well which makes me raise an eyebrow.
What's with the last boss doing an attack that lasts until you die in which you cannot escape <_< Can't be bothered trying him again after dying to that attack twice (I was moving, full speed upgrade, full armor upgrade) Still had a lot of fun with the game.
9.9/10, lots of fun!