I have made it to the start of Meme cemetary, but the green floating subbots are impossible to kill. I can't punch while jumping, and he doesnt come down to be punched when Im grounded. When I jump into him, I only take damage and die.

How do you guys kill them?

after he fires the rocket, I jump and Punch him in the air. I don't take Damage because my Body isn't hitting him. You can also press w ,if you attack.