Arrow keys to move, no backwards button Swarms of enemies will come. Some of them will actively try to seek you out, others will randomly wander. If they get too close, they will dive at you to destroy you. Space to shoot. Kill as many as possible.
Update v3.89.77: Minor updates>bug fixes. Please post a comment below if you spot more bugs. If you post a like comment, hopefully there will be a response from me.