Welp it's up.
Right now it offers 6 levels and a boss level. Any further demos will be a few level increase and bug fixes. Only the final game will be released after that. Game is 100% free, and I have rights to use all the art that is shown in the game (just sayin).
Give it a shot, feel free to give feedback, comment, note me on any glitches. Be sure to read the red text on the top of your screen carefully, and enjoy ^^