How do you beat the first level in the game Casuality on boredcom

first, click the guy on the left on the roof. then click the needle next to the other guy on the roof. when the guy goes upstairs to talk to the other guy, click on the bubble of words. when he gets back in the elevator, hit the green button and it will change to red and stop the elevator. while it is stopped, click the computer screen in front of the guy (first floor) 4 times, so he will walk over and lean on the elevator door. then press the red button on the elevator to make it come down. as soon as the guy falls in the elevator, click the rope above the elevator and they will fall down. then, click the light above the two men conversing over coffee and they will die. now you are left with the man sitting at his desk on the second floor. click the plaque hanging on the wall and he will get up to straighten it, and slip on the papers falled off his desk, and die.
follow these instructions and you'll have the level beat!