Use the arrow keys to control your movement. You have to avoid the red block but also jump on top of it to gain points. To attack the block jump over it and press the down arrow to slam downwards. If you go through the block's explosion you will still lose a life. If it is lagging too much on your computer try using phosphorus: https://phosphorus.github.io/#270875406 It's a little glitched but still works.
The enemy block and the background are drawn using pen. This is my first venture into real time rendered pen scripts. If you want check out the code. Ok guys I have fixed the problem ;). It seems the color of the enemy was changed slightly with scratch 3.0 which caused the character to be unable to interact.