Wander the halls of the abandoned facility; Don't die. WASD to move, left and right arrow keys to change camera. Don't let the entities run into you. Yes, I know this is buggy. Currently don't have a way to shoot, but hopefully soon. Run into non-moving entities to lose stars; when your stars equal zero, you win. Welcome to the Final Encore :)
I made a BETA achievement system which could possibly be incorporated in the original facility Its currently working