I can't say that mousing over one corner of the screen and mashing left click is really my cup of tea, especially when every level is the same. I understand that this is a demo and you are probably looking for proof of concept, but this concept has proven...wanting, to say the least.
I also noticed that the score counter either doesn't reset when it's meant to or can't store a big enough number to display your combined score properly. It seems to loop back to 0 when it passes 9999.
That being said, the Onion Clan is masterfully silly, and the title art for it is actually quite good. I hope you're able to use the idea for something more substantive.