W=Jump A=Left D=Right Space=Fire (Only when fire upgrade is activated) When the exclamation mark appears, you have 1 second to get ready until a laser comes from left to right. Jump to avoid this. Avoid stones as these hurt you too. You have 5 lives. As time goes on, the stones will fall faster, so be warned! Collect the red circle to activate the fire upgrade, when this is activated, press space to shoot a bullet. this will destroy any stones in it's path. The upgrade will stop after 10 seconds.
All code by me. Shout out to 'smalldog' for ideas.