Amazing work this is pretty dam crazy, wish I could help test the boss out
. Anyways the two interfaces at the top right would be annoying to have overlaying eachother. Also the last phase the both hands are meant to be killed at the same time, basically lowering the two at similar HP killing one then attacking the other in a given time period. What you'll see once you kill one of the hands that was low HP, is a orangish red and yellow bar that regens which I think will fully heal the 3rd phase back to normal if both hands aren't killed in time. Haven't seen what exactly happens if they don't die at the same time, but it's an idea.