First set you difficulty, the starting point is 1, but if you want to skip top a later point you can, however you will have less points. WASD to move doge the lasers and projectiles you have 10 Hp (bottom variable) that regenerates when you aren't getting hit. Press l to show/hide hp, O to show/hide difficulty, and P to hide/show the score. The difficulty steadily rises as time goes on and new projectile types will be added every level.
I made the project from SCRATCH (get it) except the music that was from many different artists on Newgrounds