Metal Slug Zombie Revenge

You control a soldier from a side view, moving left and right across the screen. Your job is to survive waves of zombies that shamble toward you. You fire your weapon with one button and reload with another, which forces you to manage your shots carefully. The zombies keep coming from both sides, so you have to constantly pivot and watch your flanks. The pace is relentless, and if you hesitate, you are quickly overwhelmed. It feels like a tense, frantic scramble to stay alive just a little longer.