This is a really fun demo. Hopefully, when you update it, you add control remapping options. I'm trying to play on a laptop and being forced to use touchpad left and right clicking is atrocious. The option of a pure keyboard control scheme, preferably with the ability to remap the inputs, would be much better.
And I found Greg and he broke the game -_- good times.
I didn't know how to fight him, but also, after trying to swap through him, I got stuck invisible and couldn't see either of my orbs, and just randomly took damage a few times then died. Then the framerate tanked so hard on the "you died" screen that it should be measured in seconds per frame instead of frames per second. Kind of impressive for this art style to chug that badly on my PC xD but also probably not working as intended... Still super fun though!