Unique concept. Had fun killing the player in various ways.
You can use the powers in the initial cutscene. Which was hilarious because I killed the player before the cutscene ended. Then I had to kill him "properly" again.
The timer text doesn't stand out. Like some other people, I assumed that the text at the top left was the timer. It took a while to realize that it was the one on the right... I think some sort of animated hourglass icon would be a better fit to represent your remaining powers.
Great job!