Thanks a lot for the feedback.
In what way is the aiming bugged on the controller? I didn't notice. I have a cap on the aiming angle (due to sprite limitations), so that makes it a bit strange, but I'm guessing that's not what you mean.
The difficulty is tricky, because for me it has become too easy to kill the normal ghosts, so I didn't want to make it even easier by reducing the regen. I guess it all comes down to knowing the patterns. For the screamer I wanted to add a visual indication of the range of the scream so it's easier to avoid...but I ran out of time. You can avoid it if you're not in the collision shape which is a rectangle in front (maybe 150px or so) when it stops, but it will chase you for about 4 seconds before it stops to try again in a bit. But yes, the game is missing quite a bit of balancing.