Mad Medical Mayhem

Dive into the world of Scientific Madness with Mad Medical Mayhem. Help John to escape the Medical Lab before the enemy catches up.
Make sure to survive this Mayhem by shooting the enemies as they come. Don't Blink or you might be caught by the enemies.
Test your limit by killing maximum number of enemies. Be careful as you might not know from where they may attack.
Be the top predatory or be the prey it all depends on your move.