The game's available for download! This is the made-in-ten-days version, and the gameplay's still a little rough and some of the maps are emptier than I like in terms of detail, but it's here, and ready to play :DDDDDDDD
As for the difficulty settings, only Easy and Normal have been tested to any extent, so try them at your own peril. Heck, I'm not sure if it's possible to beat the game on the hardest difficulty at all XD;;;;
A huge thanks to Ebeth for working with me on this! It's been great and it's always a delight to see what you come up with ^_^
Edit:
Ebeth here to say thank you to Unity for working with me! You were a pleasure to work with and what you created is fantastic!
-Whoops since I added that edit it says that I'm the author of the blog but unity wrote all that stuff up top!-