Didnt get a chance to put the set up for the story in your a Human that has had your mind implanted a robot in order to fix time shoot anything go wrong with a top secret experiment, which in this case has kill all humanity

arrows to move
z to travel in time
x to use
c to jump

I've uploaded an improved version it fixes warping into a wall teleporting you out of the level and the slowdown (for some reasons my bullets were checking collision with everything in the map)