I'm still not fully sure, but given the shiny, it's a big clue. The likely cause is that you have the Sun enabled. Add this to your script, within the main function after the level_load instruction:
sun_light = 0; // disable the sun
"You level up the fastest and easiest if you do things at your own level and no higher or lower" - useful tip
My 2D game - release on Jun 13th; My tutorials
