"The real tough choice is the HARD level. I've been play testing for some time and I only completed the game once on that level so far!"
But I passed the game at this level, though not without problems, but I did it in 4 hours.
P.S. I do not play very well.
P.P.S. The game has an unpleasant bug. Enemies deal damage, even when the Robot is already on another screen.