How do I get past the patrolling guard

Hint 1 of 5:

You have to enter when the guard is heading towards the screen top.

Hint 2 of 5:

Go right and hide behind wall in room to right.

Hint 3 of 5:

Once the guard comes back down and goes left or down, go upscreen.

Hint 4 of 5:

Hide in room on left corner of screen, behind the wall.

Hint 5 of 5:

To get anything done, you will have to kill the guard.