That one of my complaint if I could say, UI is a bit too rough and we have to use mouse sometimes unless I miss the way to use only keyboard to move forward with some dialog. And it comes back too quickly to the game so we're a bit taken by surprise to continue to play.
Also, in controls list, you forgot to add LShift/Rshift keys, which are far better to play pinball game than both CRTL, larger/wider keys are always better and more standard to pinball games.
That's said, it's a great game with good potential which still need some polishing esp. tutorial could be more deep cause we're immediately thrown into the game without knowing all those glyphs on the screen.
I also advise you to take a look at old Megadrive game devil md which is a very great pinball game.