So, I've been looking for a flash game platformer whose name I can't remember: You play two characters at once, a boy and a girl. One is controlled with the mouse and one with the keyboard (wasd). I think one of them (the girl?) was a ghost and together they want to defeat the big bad that killed the one. I also think the one controlled by mouse can fly around and shoot lasers. Maybe I'm mixing this up with "No time to explain". Might have been an autoscroller. There were barriers that the ghost character couldn't pass, while the other one could only jump so high and had to deactivate them via buttons, etc.
Any ideas? I think the simultaneous two characters controlled via Mouse and Keyboard was the unique selling point.